Triangle Basics
Ancient Geometry and Trigonometry
Right Triangle Trigonometry
100

This is how many sides are on a triangle. 

What is 3? 

100

Cube, Tetrahedron, Octahedron, Icosahedron and Dodecahedron are the five fundamental 3D shapes of geometry. 

What are platonic solids? 

100

This is the ratio of the opposite side of a RIGHT triangle to its hypotenuse.

What is sine? 

200

This is the angle measure that a triangle adds to be. 

What is 180?

200

This group of people were threatened by irrational numbers such as the square root of 2 or the square root of 5. 

Who are the Greeks?

200

This is the ratio of the adjacent side of a RIGHT triangle to its hypotenuse.

What is cosine?

300

90 degrees describes this kind of angle. 

What is a right angle?  

300

This famous mathematician's theorem states that the sum of the sides squared is equal to the length of the hypotenuse squared. 

Who is Pythagoras? 

300

This is the ratio of the opposite side of a RIGHT triangle to its adjacent side.

What is tangent?

400

When the sides of a triangle are the same length and the angles are all the same measure. 

What are congruent triangles?

400

This famous mathematician is known for having said "Eureka!" while contemplating the weight of gold in the bathtub. 

Who is Archimedes? 

400

tan(45). 

What is 1?

500

Triangles that have the same shape, but may have different sizes.

What are similar triangles?

500

This famous thinker put forth the idea that the sun is at the center of the universe. 

Who is Nicolaus Copernicus? 

500

The cos(90). 

What is 0?