Find the Missing Angle in Triangles

Front

What is the sum of the angles in a triangle?

Back

180 Degrees

Front

What type of triangle has all sides of different lengths?

Back

Scalene

Front

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

Back

Isosceles

Front

What type of triangle has all angles less than 90 degrees?

Back

Acute

Front

What type of triangle has one angle greater than 90 degrees?

Back

Obtuse

Front

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

Back

Right triangle

Front

If two angles of a triangle are 30 and 70 degrees, what is the measure of the third angle?

Back

80 degrees

Front

What is an equilateral triangle?

Back

A triangle with all three sides and angles equal.

Front

How do you find the missing angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is an acute angle?

Back

An angle that is less than 90 degrees.