Types of Triangles

Equilateral Triangle

All sides are the same length and all the angles are the same length.

Isosceles Triangle

Two sides are equal. Angles opposite the equal sides are equal.

Scalene Triangle

No sides are equal and no angles are equal.

Right Triangle

One of the angles is 90˚

1. What type of triangle is shown here?

A. Isosceles Triangle

B. Scalene Triangle

C. Equilateral Triangle

A. Isosceles Triangle

B. Equilateral Triangle

C. Right Triangle

2. What type of triangle is shown here?

3. What type of triangle is shown here?

A. Right Triangle

B. Scalene Triangle

C. Equilateral Triangle

A. Isosceles Triangle

B. Scalene Triangle

C.Equilateral Triangle

4. What type of triangle is shown here?

5. Which of the descriptions matches the triangle shown?

A. Twos sides of equal length

B. Three sides and angles that are different

C. All three sides and angles are equal

6. Which of the descriptions matches the triangle shown?

A. Twos sides of equal length

B. The triangle includes a right angle

C. All three sides and angles are equal

7. Which of the descriptions matches the triangle shown?

A. All sides and angles are different

B. The triangle includes a right angle

C. All three sides and angles are equal

8. Which of the descriptions matches the triangle shown?

A. All sides and angles are different

B. The triangle includes a right angle

C. All three sides and angles are equal

9. Which of these triangles is an equilateral triangle?

10. Which of these triangles is an isosceles triangle?