Classifying Triangles

Front

What is an acute triangle?

Back

A triangle where all angles are less than 90°.

Front

What characterizes a right triangle?

Back

A triangle that has one right (90°) angle.

Front

What type of triangle has all sides of equal length?

Back

An equilateral triangle.

Front

What defines an isosceles triangle?

Back

A triangle that has at least two congruent sides.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What is the sum of the angles in any triangle?

Back

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

Front

How can you identify an obtuse triangle?

Back

A triangle that has one angle greater than 90°.

Front

What is the relationship between the sides and angles in a triangle?

Back

In a triangle, the larger the angle, the longer the opposite side.

Front

What is a right angle?

Back

An angle that measures exactly 90°.

Front

What is the difference between an equilateral and an isosceles triangle?

Back

An equilateral triangle has all sides equal, while an isosceles triangle has at least two sides equal.