Classifying Triangles

Front

What is an equilateral triangle?

Back

A triangle with all three sides of equal length and all three angles measuring 60 degrees.

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length and the angles opposite those sides are equal.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths and all angles of different measures.

Front

What defines a right triangle?

Back

A triangle that has one angle measuring 90 degrees.

Front

What is an obtuse triangle?

Back

A triangle that has one angle measuring more than 90 degrees.

Front

What is an acute triangle?

Back

A triangle where all three angles are less than 90 degrees.

Front

How many congruent sides does an isosceles triangle have?

Back

An isosceles triangle has 2 congruent sides.

Front

Can a right triangle be equilateral?

Back

No, a right triangle cannot be equilateral because it must have one angle of 90 degrees.

Front

What is the sum of the angles in any triangle?

Back

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

Front

What is the difference between an acute isosceles triangle and an acute scalene triangle?

Back

An acute isosceles triangle has two equal sides and angles, while an acute scalene triangle has all sides and angles different.