##### Notes

Supports Common Core Mathematics Standard CCSS 4.G.A.2

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## Classifying Triangles

1.
What kind of triangle is shown?
1. Acute
2. Obtuse
3. Right

2.
What kind of triangle is shown?
1. Acute
2. Obtuse
3. Right
3.
The angle measures of a triangle are $30deg, 60deg, 90deg$. Which of the following best classifies the triangle?
1. Acute
2. Obtuse
3. Right

4.
The angle measures of a triangle are $85deg, 38deg, 57deg$. What kind of triangle is it?
1. Acute
2. Obtuse
3. Right
5.
Based on side length, which of the following best classifies the triangle below?
1. Scalene
2. Isosceles
3. Equilateral

6.
Based on side length, which of the following best classifies the triangle below?
1. Scalene
2. Isosceles
3. Equilateral
7.
The sides of a triangle measure 6 m, 7 m, and 4 m. Which type of triangle is described?
1. Scalene
2. Isosceles
3. Equilateral

8.
The sides of a triangle measure 3 cm, 2 cm, and 3 cm. Which type of triangle is described?
1. Scalene
2. Isosceles
3. Equilateral
9.
Elijah cuts out a triangle from a piece of cardboard as shown below. Which of the following best describes Elijah's triangle?
1. Acute and scalene
2. Obtuse and scalene
3. Acute and isosceles
4. Obtuse and isosceles

10.
Giselle constructs the triangle below using a compass and straight edge. Two of the sides measure the same length and all of the angles measure less than $90deg$. Which of the following best describes Giselle's triangle?
1. acute and equilateral
2. right and equilateral
3. acute and isosceles
4. right and isosceles
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