Geometry Review 4 Gallert

Front

∠1 and ∠2 form a linear pair. If m∠1 = (5x + 9)° and m∠2 = (3x + 11)°, find the measure of each angle.

Back

m∠1 = 109° and m∠2 = 71°

Front

Two angles whose sum is 90° are called what?

Back

Complementary

Front

A right-angled triangle has one angle measuring 90°. What is the sum of the measures of the other two angles?

Back

= 90°

Front

An angle whose measure is less than 90 degrees is called what?

Back

Acute

Front

Which shows the unique rays? \(\overrightarrow{AC}; \overrightarrow{BC}; \overrightarrow{BA}; \overrightarrow{CA}\)

Back

\(\overrightarrow{AC}; \overrightarrow{BC}; \overrightarrow{BA}; \overrightarrow{CA}\)

Front

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

Back

180°

Front

What do you call an angle that measures exactly 90 degrees?

Back

Right angle

Front

What is the term for angles that are opposite each other when two lines cross?

Back

Vertical angles

Front

What is the term for angles that add up to 180 degrees?

Back

Supplementary angles

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height