Unit 1 Review

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If angle C measures 30 degrees, what is the measure of angle D if they are supplementary?

Back

Angle D measures 150 degrees.

Front

What is the measure of the missing angle x if the options are 20°, 70°, 160°, and 180°?

Back

x = 20°.

Front

What is the relationship of vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect, and they are always equal.

Front

What does it mean to copy an angle in construction?

Back

Copying an angle involves creating a new angle that has the same measure as a given angle.

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

If two angles are acute, what is their measure?

Back

Acute angles are angles that measure less than 90 degrees.

Front

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

Back

The sum of the measures of angles in a triangle is always 180 degrees.

Front

What is the definition of a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.