Review: Geometry DCA

Front

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

Back

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

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

If one angle of a triangle measures 75° and another measures 19°, how do you find the third angle?

Back

Subtract the sum of the known angles from 180°: 180° - (75° + 19°) = 86°.

Front

What is the measure of an angle that is complementary to a 56° angle?

Back

The measure of the complementary angle is 34° (180° - 56°).

Front

Define complementary angles.

Back

Complementary angles are two angles whose sum is 90°.

Front

What is the measure of an angle that is supplementary to a 70° angle?

Back

The measure of the supplementary angle is 110° (180° - 70°).

Front

Define supplementary angles.

Back

Supplementary angles are two angles whose sum is 180°.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: Area = 1/2 * base * height.

Front

How do you find the measure of an exterior angle of a triangle?

Back

The measure of an exterior angle is equal to the sum of the measures of the two opposite interior angles.

Front

What is the relationship between the angles in a right triangle?

Back

In a right triangle, one angle measures 90°, and the sum of the other two angles is 90°.