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 protractor to measure angles and degrees.

Protractor

A protractor to measure angles and degrees.

Illustration showing that the radian is an angle that when placed at the center of a circle its sides intercept an arc equal to the radius.

Radians in Complete Circle

Illustration showing that the radian is an angle that when placed at the center of a circle its sides…

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…

Diagram used to prove the theorem: "The area of a spherical triangle, expressed in spherical degrees, is equal to its spherical excess expressed in angular degrees."

Area of Spherical Triangle

Diagram used to prove the theorem: "The area of a spherical triangle, expressed in spherical degrees,…

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…

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.

"A bulb of liquid is placed in the base of the glass graduated tube. As temperature increases, the volume of the liquid increases and it expands up the tube where its level is read on the graduated scale." —Quackenbos 1859

Thermometer

"A bulb of liquid is placed in the base of the glass graduated tube. As temperature increases, the volume…

Blank Celsius Lab Thermometer

Celsius Centigrade Lab Thermometers

Blank Celsius Lab Thermometer

Dual Blank Lab Thermometer

Dual Lab Celsius Centigrade Thermometers

Dual Blank Lab Thermometer

Blank Dual Outdoor Thermometer

Dual Outdoor Celsius Centigrade Thermometers

Blank Dual Outdoor Thermometer

Blank Fahrenheit Lab Termometer

Fahrenheit Lab Thermometers

Blank Fahrenheit Lab Termometer

Blank Outdoor Celsius Centigrade Thermometer

Outdoor Celsius Centigrade Thermometers

Blank Outdoor Celsius Centigrade Thermometer

Blank Outdoor Fahrenheit Thermometer

Outdoor Fahrenheit Thermometers

Blank Outdoor Fahrenheit Thermometer

An isosceles triangle with angles 1, 89.5, 89.5

Isosceles Triangle degrees 1, 89.5, 89.5

An isosceles triangle with angles 1, 89.5, 89.5

An isosceles triangle with angles 10, 85, 85

Isosceles Triangle degrees 10, 85, 85

An isosceles triangle with angles 10, 85, 85

An isosceles triangle with angles 100, 40, 40

Isosceles Triangle degrees 100, 40, 40

An isosceles triangle with angles 100, 40, 40

An isosceles triangle with angles 101, 39.5, 39.5

Isosceles Triangle degrees 101, 39.5, 39.5

An isosceles triangle with angles 101, 39.5, 39.5

An isosceles triangle with angles 102, 39, 39

Isosceles Triangle degrees 102, 39, 39

An isosceles triangle with angles 102, 39, 39

An isosceles triangle with angles 103, 38.5, 38.5

Isosceles Triangle degrees 103, 38.5, 38.5

An isosceles triangle with angles 103, 38.5, 38.5

An isosceles triangle with angles 104, 38, 38

Isosceles Triangle degrees 104, 38, 38

An isosceles triangle with angles 104, 38, 38

An isosceles triangle with angles 105, 37.5, 37.5

Isosceles Triangle degrees 105, 37.5, 37.5

An isosceles triangle with angles 105, 37.5, 37.5

An isosceles triangle with angles 106, 37, 37

Isosceles Triangle degrees 106, 37, 37

An isosceles triangle with angles 106, 37, 37

An isosceles triangle with angles 107, 36.5, 36.5

Isosceles Triangle degrees 107, 36.5, 36.5

An isosceles triangle with angles 107, 36.5, 36.5

An isosceles triangle with angles 108, 36, 36

Isosceles Triangle degrees 108, 36, 36

An isosceles triangle with angles 108, 36, 36

An isosceles triangle with angles 109, 35.5, 35.5

Isosceles Triangle degrees 109, 35.5, 35.5

An isosceles triangle with angles 109, 35.5, 35.5

An isosceles triangle with angles 11, 84.5, 84.5

Isosceles Triangle degrees 11, 84.5, 84.5

An isosceles triangle with angles 11, 84.5, 84.5

An isosceles triangle with angles 110, 35, 35

Isosceles Triangle degrees 110, 35, 35

An isosceles triangle with angles 110, 35, 35

An isosceles triangle with angles 111, 34.5, 34.5

Isosceles Triangle degrees 111, 34.5, 34.5

An isosceles triangle with angles 111, 34.5, 34.5

An isosceles triangle with angles 112, 34, 34

Isosceles Triangle degrees 112, 34, 34

An isosceles triangle with angles 112, 34, 34

An isosceles triangle with angles 113, 33.5, 33.5

Isosceles Triangle degrees 113, 33.5, 33.5

An isosceles triangle with angles 113, 33.5, 33.5

An isosceles triangle with angles 114, 33, 33

Isosceles Triangle degrees 114, 33, 33

An isosceles triangle with angles 114, 33, 33

An isosceles triangle with angles 115, 32.5, 32.5

Isosceles Triangle degrees 115, 32.5, 32.5

An isosceles triangle with angles 115, 32.5, 32.5

An isosceles triangle with angles 116, 32, 32

Isosceles Triangle degrees 116, 32, 32

An isosceles triangle with angles 116, 32, 32

An isosceles triangle with angles 117, 31.5, 31.5

Isosceles Triangle degrees 117, 31.5, 31.5

An isosceles triangle with angles 117, 31.5, 31.5

An isosceles triangle with angles 118, 31, 31

Isosceles Triangle degrees 118, 31, 31

An isosceles triangle with angles 118, 31, 31

An isosceles triangle with angles 119, 30.5, 30.5

Isosceles Triangle degrees 119, 30.5, 30.5

An isosceles triangle with angles 119, 30.5, 30.5

An isosceles triangle with angles 12, 84, 84

Isosceles Triangle degrees 12, 84, 84

An isosceles triangle with angles 12, 84, 84

An isosceles triangle with angles 120, 30, 30

Isosceles Triangle degrees 120, 30, 30

An isosceles triangle with angles 120, 30, 30

An isosceles triangle with angles 121, 29.5, 29.5

Isosceles Triangle degrees 121, 29.5, 29.5

An isosceles triangle with angles 121, 29.5, 29.5

An isosceles triangle with angles 122, 29, 29

Isosceles Triangle degrees 122, 29, 29

An isosceles triangle with angles 122, 29, 29

An isosceles triangle with angles 123, 28.5, 28.5

Isosceles Triangle degrees 123, 28.5, 28.5

An isosceles triangle with angles 123, 28.5, 28.5

An isosceles triangle with angles 124, 28, 28

Isosceles Triangle degrees 124, 28, 28

An isosceles triangle with angles 124, 28, 28

An isosceles triangle with angles 125, 27.5, 27.5

Isosceles Triangle degrees 125, 27.5, 27.5

An isosceles triangle with angles 125, 27.5, 27.5

An isosceles triangle with angles 126, 27, 27

Isosceles Triangle degrees 126, 27, 27

An isosceles triangle with angles 126, 27, 27

An isosceles triangle with angles 127, 26.5, 26.5

Isosceles Triangle degrees 127, 26.5, 26.5

An isosceles triangle with angles 127, 26.5, 26.5

An isosceles triangle with angles 128, 26, 26

Isosceles Triangle degrees 128, 26, 26

An isosceles triangle with angles 128, 26, 26

An isosceles triangle with angles 129, 25.5, 25.5

Isosceles Triangle degrees 129, 25.5, 25.5

An isosceles triangle with angles 129, 25.5, 25.5

An isosceles triangle with angles 13, 83.5, 83.5

Isosceles Triangle degrees 13, 83.5, 83.5

An isosceles triangle with angles 13, 83.5, 83.5