Triangle angle sum theorem

Front

What is the Triangle Angle Sum Theorem?

Back

The Triangle Angle 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 34 degrees and another is 101 degrees, what is the measure of the third angle?

Back

The third angle is 45 degrees.

Tags

CCSS.8.G.A.5

Front

What is the measure of angle b if the other two angles are 36 degrees and 64 degrees?

Back

Angle b measures 80 degrees.

Tags

CCSS.8.G.A.5

Front

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

Back

To find an unknown angle, subtract the sum of the known angles from 180 degrees.

Tags

CCSS.8.G.A.5

Front

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

Back

Each angle in an equilateral triangle measures 60 degrees.

Tags

CCSS.8.G.A.5

Front

If a triangle has angles measuring 50 degrees and 70 degrees, what is the measure of the third angle?

Back

The third angle measures 60 degrees.

Tags

CCSS.8.G.A.5

Front

What is the relationship between the angles in a right triangle?

Back

In a right triangle, one angle measures 90 degrees, and the sum of the other two angles is 90 degrees.

Tags

CCSS.8.G.A.5

Front

If two angles of a triangle are equal, what type of triangle is it?

Back

It is an isosceles triangle.

Tags

CCSS.4.G.A.2

Front

What is the measure of the angles in a triangle with angles measuring 30 degrees and 60 degrees?

Back

The third angle measures 90 degrees.

Tags

CCSS.8.G.A.5

Front

How do you solve for x in a triangle if you know the measures of the other two angles?

Back

Set up the equation: x + angle1 + angle2 = 180, then solve for x.

Tags

CCSS.8.G.A.5