# Types of Triangles (Grade 9)

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## Types of Triangles

1.

Which of these is not a type of triangle?

- acute
- hypotenuse
- isosceles
- obtuse

2.

An equilateral triangle MUST have

- all sides that are the same length
- no sides that are the same length
- at least two sides that are the same length
- no angles that are the same size

3.

A scalene triangle has:

- three equal sides
- three uneven sides
- two equal sides
- two square corners

4.

Which type of triangle has 2 sides that are the same length?

- isosceles
- scalene
- equilateral
- congruent

5.

The triangle below can best be described as

- an acute triangle
- a right triangle
- an obtuse triangle

6.

All of the sides of this triangle are equal. What kind of a triangle is this?

- scalene
- isosceles
- equilateral
- right triangle

7.

This triangle has no congruent sides. What kind of a triangle is this?

- isosceles
- equilateral
- scalene

8.

Side AB = 30 cm, Side BC = 30 cm, Side AC = 20 cm. What kind of a triangle is this?

- isosceles
- right triangle
- scalene
- equilateral

9.

How many acute angles can an isosceles triangle have?

10.

Describe the 3 types of triangles (by side length).

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