Unit 2 -Triangle Sum Theorem

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.

Front

If one angle of a triangle is 50 degrees and another is 60 degrees, what is the measure of the third angle?

Back

70 degrees.

Front

What is the formula to find the measure of an unknown angle in a triangle?

Back

180 degrees - (sum of the known angles).

Front

In a triangle, if two angles are equal and one angle measures 40 degrees, what are the measures of the other two angles?

Back

Both angles measure 70 degrees.

Front

If the angles of a triangle are represented as x, x, and 40 degrees, what is the value of x?

Back

70 degrees.

Front

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

Back

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

Front

If a triangle has angles measuring 30 degrees and 60 degrees, what is the measure of the third angle?

Back

90 degrees.

Front

How do you solve for an unknown angle in a triangle when given two angles?

Back

Subtract the sum of the two known angles from 180 degrees.

Front

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

Back

Each angle measures 60 degrees.

Front

If one angle of a triangle is 80 degrees and the other two angles are equal, what is the measure of the equal angles?

Back

Each equal angle measures 50 degrees.