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# Types of Triangles (Grade 9)

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## Types of Triangles

1.
Which of these is not a type of triangle?
1. acute
2. hypotenuse
3. isosceles
4. obtuse
2.
An equilateral triangle MUST have
1. all sides that are the same length
2. no sides that are the same length
3. at least two sides that are the same length
4. no angles that are the same size
3.
A scalene triangle has:
1. three equal sides
2. three uneven sides
3. two equal sides
4. two square corners
4.
Which type of triangle has 2 sides that are the same length?
1. isosceles
2. scalene
3. equilateral
4. congruent
5.
The triangle below can best be described as
1. an acute triangle
2. a right triangle
3. an obtuse triangle
6.
All of the sides of this triangle are equal. What kind of a triangle is this?
1. scalene
2. isosceles
3. equilateral
4. right triangle
7.
This triangle has no congruent sides. What kind of a triangle is this?
1. isosceles
2. equilateral
3. scalene
8.
Side AB = 30 cm, Side BC = 30 cm, Side AC = 20 cm. What kind of a triangle is this?
1. isosceles
2. right triangle
3. scalene
4. 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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