Classify Triangles

Front

What is an isosceles triangle?

Back

A triangle with at least two equal sides.

Front

How can triangles be classified by angles?

Back

Triangles can be classified as acute (less than 90°), right (exactly 90°), or obtuse (greater than 90°).

Front

What defines a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What is an equilateral triangle?

Back

A triangle with all three sides equal and all angles measuring 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

How do you classify a triangle with one angle greater than 90°?

Back

It is classified as an obtuse triangle.

Front

What type of triangle has one right angle?

Back

It is classified as a right triangle.

Front

Can a triangle be both isosceles and right?

Back

Yes, a triangle can be both isosceles and right if it has two equal sides and one right angle.

Front

What is the definition of an acute triangle?

Back

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

Front

If a triangle has sides of lengths 3, 4, and 5, how is it classified?

Back

It is classified as a scalene triangle.