Math 2: Review

Front

What is the Pythagorean theorem?

Back

In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. (a² + b² = c²)

Front

What is the sine function?

Back

In a right triangle, the sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse. (sin θ = opposite/hypotenuse)

Front

What is the cosine function?

Back

In a right triangle, the cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse. (cos θ = adjacent/hypotenuse)

Front

What is the tangent function?

Back

In a right triangle, the tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side. (tan θ = opposite/adjacent)

Front

What is the sum of angles in a triangle?

Back

The sum of the interior angles in a triangle is always 180°.

Front

What is a complementary angle?

Back

Two angles are complementary if the sum of their measures is 90°.

Front

What is a supplementary angle?

Back

Two angles are supplementary if the sum of their measures is 180°.

Front

How do you find the missing angle in a triangle?

Back

Subtract the sum of the known angles from 180°.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal to each other.

Front

What is the relationship between corresponding angles?

Back

Corresponding angles are equal when two parallel lines are cut by a transversal.