Types of Triangles

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all three angles are less than 90 degrees.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle measuring more than 90 degrees.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are equal in length and all three angles are equal, each measuring 60 degrees.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides that are equal in length.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle where all three sides are of different lengths.

Front

What type of angle is 90 degrees?

Back

A right angle.

Front

What type of angle is less than 90 degrees?

Back

An acute angle.

Front

What type of angle is more than 90 degrees?

Back

An obtuse angle.

Front

How many degrees are in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.