Triangle Sum and Exterior Angle Theorem Practice

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.

Tags

CCSS.8.G.A.5

Front

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

Back

It is a right triangle.

Tags

CCSS.4.G.A.2

Front

What is the measure of the third angle in a triangle if the first two angles are 50 degrees and 60 degrees?

Back

70 degrees.

Tags

CCSS.8.G.A.5

Front

What is an exterior angle of a triangle?

Back

An exterior angle is formed by one side of the triangle and the extension of an adjacent side.

Front

According to the Exterior Angle Theorem, how do you find the measure of an exterior angle?

Back

The measure of an exterior angle is equal to the sum of the measures of the two non-adjacent interior angles.

Tags

CCSS.8.G.A.5

Front

If one angle of a triangle is 30 degrees and another is 70 degrees, what is the measure of the third angle?

Back

80 degrees.

Tags

CCSS.8.G.A.5

Front

What is the relationship between 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

How do you calculate the missing angle in a triangle if you know the other two angles?

Back

Subtract the sum of the known angles from 180 degrees.

Tags

CCSS.8.G.A.5

Front

What is the measure of an angle if the other two angles in the triangle are 45 degrees and 45 degrees?

Back

90 degrees.

Tags

CCSS.8.G.A.5

Front

If a triangle has angles measuring 40 degrees and 100 degrees, what is the measure of the third angle?

Back

40 degrees.

Tags

CCSS.8.G.A.5