Classifying Triangles Review

Front

What is an isosceles triangle?

Back

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

Front

How many acute angles does an acute triangle have?

Back

An acute triangle has 3 acute angles.

Front

What type of triangle has one angle that measures 90°?

Back

A right triangle has one angle that measures 90°.

Front

What is a right angle?

Back

A right angle measures exactly 90°.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle greater than 90°.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are of equal length and all angles are equal to 60°.

Front

What is the sum of the angles in any triangle?

Back

The sum of the angles in any triangle is always 180°.

Front

What is a scalene triangle?

Back

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

Front

Can a triangle have two right angles?

Back

No, a triangle cannot have two right angles.

Front

What is the difference between acute and obtuse triangles?

Back

An acute triangle has all angles less than 90°, while an obtuse triangle has one angle greater than 90°.