5.1 Angles of Triangles

Front

What type of triangle has all sides of different lengths?

Back

Scalene triangle

Front

What type of triangle has at least two sides of equal length?

Back

Isosceles triangle

Front

What type of triangle has all sides of equal length?

Back

Equilateral triangle

Front

The sum of all angles in a triangle is ______.

Back

180°

Front

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

Back

Right triangle

Front

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

Back

60°

Front

If two angles of a triangle are 50° and 60°, what is the measure of the third angle?

Back

70°

Front

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

Back

Exterior angle = sum of the two opposite interior angles

Front

If a triangle has angles measuring 30° and 60°, what is the type of triangle based on its angles?

Back

Acute triangle

Front

What is the relationship between the angles in a triangle and its sides?

Back

The larger the angle, the longer the opposite side.