Types of Triangles

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 a right triangle?

Back

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

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle greater 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 to 60 degrees.

Front

How many sides does a triangle have?

Back

A triangle has three sides.

Front

What is the sum of the angles in a triangle?

Back

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

Front

What type of triangle has all sides of different lengths?

Back

A scalene triangle has all sides of different lengths.

Front

What type of triangle has at least two sides that are equal?

Back

An isosceles triangle has at least two sides that are equal.

Front

Can a triangle be both obtuse and equilateral?

Back

No, a triangle cannot be both obtuse and equilateral.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.