GEOMETRY REVIEW FALL2024

Front

What is the formula for the cosine of an angle in a right triangle?

Back

COS X = Adjacent side / Hypotenuse

Front

In a 30-60-90 triangle, what is the ratio of the lengths of the sides?

Back

1 : √3 : 2

Front

What is the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse.

Front

How do you find the length of the hypotenuse in a right triangle?

Back

Use the formula: Hypotenuse = √(a² + b²).

Front

What is the definition of a right triangle?

Back

A triangle with one angle measuring 90 degrees.

Front

What is the sine of an angle in a right triangle?

Back

SIN X = Opposite side / Hypotenuse

Front

What is the tangent of an angle in a right triangle?

Back

TAN X = Opposite side / Adjacent side

Front

How do you calculate the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the sum of the angles in any triangle?

Back

180 degrees.

Front

What is the definition of similar triangles?

Back

Triangles that have the same shape but may differ in size.