Types of Triangles

Front

What is a triangle?

Back

A triangle is a three-sided polygon.

Front

What are the types of triangles based on angles?

Back

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

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 Scalene Triangle?

Back

A triangle with all angles less than 90 degrees and all sides of different lengths.

Front

What is a Right Scalene Triangle?

Back

A triangle with one right angle and all sides of different lengths.

Front

What is a Right Isosceles Triangle?

Back

A triangle with one right angle and two sides that are equal in length.

Front

What is an Obtuse Isosceles Triangle?

Back

A triangle with one obtuse angle and two sides that are equal in length.

Front

Classify a triangle with angles measuring 30°, 60°, and 90°.

Back

Right Scalene Triangle.

Front

Classify a triangle with angles measuring 45°, 45°, and 90°.

Back

Right Isosceles Triangle.

Front

Classify a triangle with angles measuring 100°, 40°, and 40°.

Back

Obtuse Isosceles Triangle.