Triangle Sum & Exterior Angle

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

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

Back

In an equilateral triangle, each angle measures 60 degrees.

Front

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

Back

It is a right triangle.

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

How do you calculate 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.

Front

If two angles of a triangle are 45 degrees and 55 degrees, what is the measure of the third angle?

Back

The third angle measures 80 degrees (180 - 45 - 55 = 80).

Front

What is the relationship between an exterior angle and the interior angles of a triangle?

Back

An exterior angle is equal to the sum of the two opposite interior angles.

Front

What is the measure of the angles in a triangle if one angle is 24 degrees and another is 96 degrees?

Back

The third angle measures 60 degrees (180 - 24 - 96 = 60).

Front

If the exterior angle of a triangle is 143 degrees, what is the sum of the two opposite interior angles?

Back

The sum of the two opposite interior angles is 143 degrees.

Front

What is the formula to find the sum of angles in a triangle?

Back

The sum of angles in a triangle is given by the formula: Angle A + Angle B + Angle C = 180 degrees.