Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 10.

Polar Grid In Degrees With Radius 10

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 1.

Polar Grid In Degrees With Radius 1

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 1.

Polar Grid In Degrees With Radius 1

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 2.

Polar Grid In Degrees With Radius 2

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 2.

Polar Grid In Degrees With Radius 2

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 3.

Polar Grid In Degrees With Radius 3

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 3.

Polar Grid In Degrees With Radius 3

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 4.

Polar Grid In Degrees With Radius 4

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 4.

Polar Grid In Degrees With Radius 4

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 5.

Polar Grid In Degrees With Radius 5

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 5.

Polar Grid In Degrees With Radius 5

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 6.

Polar Grid In Degrees With Radius 6

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 6.

Polar Grid In Degrees With Radius 6

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 7.

Polar Grid In Degrees With Radius 7

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 7.

Polar Grid In Degrees With Radius 7

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 8.

Polar Grid In Degrees With Radius 8

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 8.

Polar Grid In Degrees With Radius 8

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 9.

Polar Grid In Degrees With Radius 9

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 9.

Polar Grid In Degrees With Radius 9

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

A Lemniscate is, in general, a curve generated by a point moving so that the product of its distances from two fixed points is the square of half the distance between the points. It is a particular case of the Cassinian oval and resembles a figure 8. When the line joining the two fixed points is the axis of x and the middle point of this line is the origin, the Cartesian equation is the fourth degree equation, (((x^2)+(y^2))^2)=2(a^2)((x^2)-(y^2)). The polar equation is (ℽ^2) = 2(a^2)cos(2θ). The locus of the feet of the perpendiculars from the center of an equilateral hyperbola to its tangents is a lemniscate. The name lemniscate is sometimes given to any crunodal symmetric quartic curve having no infinite branch. The name is also sometimes given to a general class of curves derived from other curves in the way that the above is derived from the equilateral hyperbola. With these more general definitions of the lemniscate the above curve is called the lemniscate of Bernoulli.

Lemniscate

A Lemniscate is, in general, a curve generated by a point moving so that the product of its distances…

Indicator that establishes the horizontal when a bubble is centered in a tube of liquid

Construction Level

Indicator that establishes the horizontal when a bubble is centered in a tube of liquid

"The outer edge is a semicircle, with center at 0, and is divided into 360 parts. Each division is one-half of one degree, and, for convenience, the degrees are numbered from 0 to 180 from both A and B." — Hallock, 1905

Protractor

"The outer edge is a semicircle, with center at 0, and is divided into 360 parts. Each division is one-half…

Roof with a slope of 30 degrees. Angle theta is the inclination to the horizontal of the line AB, drawn in the roof and making an angle of 35 degrees with the line of greatest slope.

Roof With 30 degree Inclination for Trigonometry Triangle Problems

Roof with a slope of 30 degrees. Angle theta is the inclination to the horizontal of the line AB, drawn…

Two set squares, whose sides are 3,4, and 5 in., are placed so that their 4-in. sides and right angles coincide, and the angle between the 3-in. sides is 50 degrees. Theta, Ǝ is the angle between the longest sides.

Two Squares With Sides of Lengths 3,4,5 Placed at Right Angles to Each Other

Two set squares, whose sides are 3,4, and 5 in., are placed so that their 4-in. sides and right angles…

The straight line is the simplest type of locus and the simplest first degree equation.

Straight Line

The straight line is the simplest type of locus and the simplest first degree equation.

Illustration showing a survey on the lake front in Chicago with distances and angle measures shown.

Survey of Lake Front in Chicago

Illustration showing a survey on the lake front in Chicago with distances and angle measures shown.

0 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

0 Degrees Celsius Centigrade

-1 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-1 Degrees Celsius Centigrade

-2 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-2 Degrees Celsius Centigrade

-3 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-3 Degrees Celsius Centigrade

-4 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-4 Degrees Celsius Centigrade

-5 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-5 Degrees Celsius Centigrade

-6 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-6 Degrees Celsius Centigrade

-7 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-7 Degrees Celsius Centigrade

-8 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-8 Degrees Celsius Centigrade

-9 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-9 Degrees Celsius Centigrade

-10 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-10 Degrees Celsius Centigrade

-11 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-11 Degrees Celsius Centigrade

-12 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-12 Degrees Celsius Centigrade

-13 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-13 Degrees Celsius Centigrade

-14 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-14 Degrees Celsius Centigrade

-15 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-15 Degrees Celsius Centigrade

-16 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-16 Degrees Celsius Centigrade

-17 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-17 Degrees Celsius Centigrade

-18 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-18 Degrees Celsius Centigrade

-19 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

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-20 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

-20 Degrees Celsius Centigrade

1 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

1 Degrees Celsius Centigrade

2 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

2 Degrees Celsius Centigrade

3 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

3 Degrees Celsius Centigrade

4 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

4 Degrees Celsius Centigrade

5 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

5 Degrees Celsius Centigrade

6 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

6 Degrees Celsius Centigrade

7 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

7 Degrees Celsius Centigrade

8 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

8 Degrees Celsius Centigrade

9 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

9 Degrees Celsius Centigrade

10 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

10 Degrees Celsius Centigrade

11 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

11 Degrees Celsius Centigrade

12 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

12 Degrees Celsius Centigrade

13 Degrees Celsius Centigrade

Celsius Centigrade Lab Thermometers

13 Degrees Celsius Centigrade