5.1-5.5 Review

Front

What is the distance formula used to calculate the distance between two points (x1, y1) and (x2, y2)?

Back

Distance = √((x2 - x1)² + (y2 - y1)²)

Front

What is the sum of the interior angles in a triangle?

Back

180°

Front

If two angles are supplementary, what is the relationship between their measures?

Back

The sum of their measures is 180°.

Front

What is the measure of an angle that is complementary to a 90° angle?

Back

0°.

Front

If m∠A = 125° and m∠B is supplementary to m∠A, what is m∠B?

Back

m∠B = 55°.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal.

Front

If m∠1 = 115°, what is the measure of its adjacent angle?

Back

m∠2 = 65°.

Front

In triangle XYZ, if m∠X = 40° and m∠Y = 50°, what is m∠Z?

Back

m∠Z = 90°.

Front

What is the formula for finding the measure of an exterior angle of a triangle?

Back

Exterior angle = sum of the two opposite interior angles.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.