Classifying Triangles

Front

What is a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

What are the types of triangles based on angles?

Back

1. Acute Triangle: All angles are less than 90°. 2. Right Triangle: One angle is exactly 90°. 3. Obtuse Triangle: One angle is greater than 90°.

Front

What are the types of triangles based on sides?

Back

1. Equilateral Triangle: All sides are equal. 2. Isosceles Triangle: Two sides are equal. 3. Scalene Triangle: All sides are different.

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all three angles are less than 90°.

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle measuring exactly 90°.

Front

What is an obtuse triangle?

Back

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

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides and angles are equal, each angle measuring 60°.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle with at least two sides that are equal in length.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle where all three sides and angles are different.

Front

How do you classify a triangle with angles 74°, 90°, and 16°?

Back

It is classified as a right triangle because it has one angle that is exactly 90°.