Triangle Classification Worksheet
A Grade 6 math worksheet focused on classifying triangles by their sides and angles, including equilateral, isosceles, scalene, acute, obtuse, and right triangles.
Includes
Standards
Topics
Triangle Classification
Name:
Date:
Score:
Read each question carefully and classify the triangles based on their side lengths and angle measures. Provide detailed answers where required.
1. A triangle with all three sides of equal length is called:
Isosceles triangle
Scalene triangle
Equilateral triangle
Right triangle
2. Which type of triangle has one angle greater than 90 degrees?
Acute triangle
Obtuse triangle
Right triangle
Equilateral triangle
3. A triangle with two sides of equal length is called an triangle.
4. All angles in an acute triangle are 90 degrees.
5. Classify the triangle shown below by its sides and angles:
Classification by sides:
Classification by angles:
6. Classify the triangle shown below by its sides and angles:
Classification by sides:
Classification by angles:
7. A scalene triangle can also be an isosceles triangle.
True
False
8. An equilateral triangle is always an acute triangle.
True
False
Match each triangle classification with its definition.
9. Equilateral
a. All angles are less than 90 degrees.
10. Scalene
b. All three sides are equal in length.
11. Obtuse
c. One angle is exactly 90 degrees.
12. Right
d. All three sides are different lengths.
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