Triangle Review

Front

What type of triangle has one angle measuring 90 degrees?

Back

Right triangle

Front

What are angles that add up to 90 degrees called?

Back

Complementary Angles

Front

What are angles that add up to 180 degrees called?

Back

Supplementary Angles

Front

What do you call angles that are opposite each other when two lines intersect?

Back

Vertical Angles

Front

What do you call angles that share a common side and vertex?

Back

Adjacent Angles

Front

If a triangle has angles measuring 60°, 60°, and 60°, what type of triangle is it?

Back

Equilateral triangle

Front

If a triangle has angles measuring 80°, 50°, and 50°, what type of triangle is it?

Back

Acute triangle

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height

Front

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

Back

180 degrees

Front

If one angle of a triangle is 100 degrees, what can you say about the other two angles?

Back

They must be acute (less than 90 degrees) and add up to 80 degrees.