7th Grade Flashcard Review: Angles & Triangles

Front

What is the sum of the angles in a triangle?

Back

180 degrees

Front

If one angle in a triangle is 90 degrees, what type of triangle is it?

Back

Right triangle

Front

What do you call an angle that measures less than 90 degrees?

Back

Acute angle

Front

What do you call an angle that measures more than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

What is the measure of each angle in an equilateral triangle?

Back

60 degrees

Front

If two angles are complementary, what is the sum of their measures?

Back

90 degrees

Front

If two angles are supplementary, what is the sum of their measures?

Back

180 degrees

Front

What is the value of x if m∠A + m∠B + m∠C = 180° and m∠A = 50°, m∠B = 70°?

Back

60°

Front

What is the measure of the third angle in a triangle if the other two angles are 45° and 45°?

Back

90°

Front

If m∠1 = 30°, what is m∠2 if m∠1 and m∠2 are vertical angles?

Back

30°