Flashcard 2A: Solving for Unknown Angles: RETAKE #1

Front

What is the sum of the angles in a triangle?

Back

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

Tags

CCSS.8.G.A.5

Front

What are complementary angles?

Back

Complementary angles are two angles that add up to 90 degrees.

Tags

CCSS.7.G.B.5

Front

What are supplementary angles?

Back

Supplementary angles are two angles that add up to 180 degrees.

Tags

CCSS.7.G.B.5

Front

If two angles are congruent, what does that mean?

Back

It means that the two angles have equal measures.

Tags

CCSS.8.G.A.2

Front

What is the definition of an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the definition of an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

What is the definition of a right angle?

Back

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

Tags

CCSS.4.G.A.1

Front

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

Back

You can find the measure of an unknown angle by subtracting the sum of the known angles from 180 degrees.

Tags

CCSS.8.G.A.5

Front

What is the relationship between angles formed by parallel lines and a transversal?

Back

Angles formed by parallel lines and a transversal have specific relationships: corresponding angles are equal, alternate interior angles are equal, and consecutive interior angles are supplementary.

Tags

CCSS.8.G.A.5

Front

What is the formula for finding the measure of an exterior angle of a triangle?

Back

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

Tags

CCSS.8.G.A.5