Perpendicular Bisectors In A Triangle
Illustration used to prove "The perpendicular bisectors of the sides of a triangle are concurrent in…
Perpendiculars Dropped Any Point in the Equilateral Triangle
Illustration to show the perpendiculars dropped from any point in the equilateral triangle to the three…
Perpendiculars Dropped From Midpoint of Base to Legs of Isosceles Triangles
Illustration to show the perpendiculars dropped from the midpoint of the base to the legs of an isosceles…
Point in Base of Isosceles Triangle
Illustration to show that the difference of the distances from any point in the base produced of an…
Trigonometric Reference Triangles/Angles (60 degrees) Drawn in Quadrants
Trigonometric reference triangles/angles drawn for 60 degree reference angel in quadrants I and II.
Inclined Plane Forming Right Triangle
Inclined plane forming right triangle showing the velocity of a body sliding a distance,s, down a smooth…
Right Triangle With Sides .7 and 1 and Angle of 35 degrees
Right triangle OQP with angle of 35 degrees, height of .70 inches, and leg of 1 inch.
Right Triangle With Sides .64 and 1 and Angle of 40 degrees
Right triangle OQP with angle of 40 degrees, height of .64 inches, and hypotenuse of 1 inch.
Right Triangle ABC With Angle 67 degrees 42.8 minutes and Hypotenuse 23.47 ft.
Right triangle ABC with a base angle of 67 degrees 4208 minutes and a hypotenuse of 23.47 ft.
Right Triangle ABC With Leg 23.85 ft. and Hypotenuse 35.62 ft.
Right triangle ABC with a leg of 23.85 feet and a hypotenuse of 35.62 feet.
Right Triangle With One Angle Double the Other
Illustration of a right triangle with one angle the double of the other.
Triangle With Segment Extended for Exterior Angle
Illustration showing a triangle with an exterior segment drawn to show and exterior angle. This can…
Special Right Triangle with Angles 30, 60, 90 degrees
Special right triangle with angles 30 degrees, 60 degrees, and 90 degrees with side measures/relationships…
Special Right Triangle with Angles 45, 45, 90 degrees
Special right triangle with angles 45 degrees, 45 degrees, and 90 degrees with side measures/relationships…
Equal Triangles by Side Side Side
Illustration showing two equal triangles. This can be used to show that two triangles are equal if the…
Proof of Equal Triangles Drawing
Illustration to show if two triangles have two sides of the one equal, respectively, to two sides of…
Trigonometric Reference Triangles/Angles Drawn in Quadrants
Trigonometric reference triangles/angles drawn for reference angel in quadrants I and II. This illustration…
Equal Right Triangles by Hypotenuse Leg
Illustration showing two equal right triangles. This can be used to show that two right triangles are…
Three Triangles Used to Compare Sides
Illustration showing three triangles. This is used to show the following theorem: If two triangles have…
Triangular City Block With Angles and Lengths
Illustration showing an angle of 23 degrees 40 minutes making a triangle in a city block and marking…
Arcs and Angles of a Trigonometric Circle
"In trigonometry, the arcs of circles are used to measure angles. All angles are supposed to have their…
Trigonometry Triangle to Show Sine, Cosine, and Tangent
Right triangle OCA, inside of Circle O is used to show that side AC is "opposite" O and side OC is "adjacent"…
Wire at Right Angle to the Uniting Wire
"Direction of the needle when placed at a right angle to the uniting wire." -Comstock 1850
Vector Showing Force at Angle of 20 degrees
OP is a vector (directed quantity) showing the force by a weight acting on it at an angle of 20 degrees.
Visual Angle
"Suppose the object a, appears to the naked eye of the length repreesnted in the drawing. Now, as the…
Wrenches
"1, Screw-wrench; 2, Tap-wrench; 3, Angle-wrench; 4, Tube-wrench; 5, Monkey-wrench for hexagonal and…