5.1 Angles of Triangles

Front

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

Back

180°

Front

What type of triangle has all sides of different lengths?

Back

Scalene

Front

Find the measure of the missing angle if the other two angles are 60° and 70°.

Back

50°

Front

What is the sum of exterior angles of a triangle?

Back

360°

Front

Classify the triangle with angles measuring 120°, 30°, and 30°.

Back

Obtuse

Front

What type of triangle has at least two equal sides?

Back

Isosceles

Front

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

Back

60°

Front

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

Back

Right triangle

Front

What is the relationship between the angles of a triangle and its exterior angles?

Back

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

Front

If the angles of a triangle are in the ratio 2:3:4, what are the measures of the angles?

Back

40°, 60°, 80°