Triangle Classification Worksheet
A Grade 8 math worksheet focusing on classifying triangles by their sides and angles, including various problem types.
Includes
Standards
Topics
Triangle Classification Worksheet
Name:
Date:
Score:
Read each question carefully and classify the triangles based on their side lengths and angle measures. Show all your work when necessary.
1. A triangle with all three sides of different lengths is called:
Equilateral
Isosceles
Scalene
Right
2. What type of triangle has one angle greater than 90 degrees?
Acute
Obtuse
Right
Equiangular
3. An equilateral triangle has three sides and three angles.
4. A right-angled triangle must have exactly one angle that measures degrees.
5. An isosceles triangle has at least two sides.
6. Classify the triangle shown below by its sides and angles. Explain your reasoning.
7. A triangle has angle measures of 30°, 60°, and 90°. Classify this triangle by its angles and sides.
8. An acute triangle can also be an isosceles triangle.
True
False
9. All equilateral triangles are also acute triangles.
True
False
Match the triangle description with its classification.
10. All angles are less than 90°
a. Obtuse
11. One angle is 90°
b. Acute
12. One angle is greater than 90°
c. Right
13. All sides are equal
d. Scalene
14. No sides are equal
e. Isosceles
15. Two sides are equal
f. Equilateral
Related Worksheets
Three-Dimensional Figures Worksheet
This worksheet focuses on identifying, understanding properties, and calculating basic measurements of three-dimensional figures for Grade 8 math students.
Grade 8 Lateral Area Worksheet
Calculate the lateral surface area of various three-dimensional shapes, including cylinders, prisms, and pyramids.
Grade 8 Triangle Properties Worksheet
This worksheet covers fundamental properties of triangles, including angle sums, types of triangles, and the Pythagorean theorem, suitable for Grade 8 math students.
Grade 8 Triangle Properties Worksheet
This worksheet covers fundamental properties of triangles, including angle sums, types of triangles, and the Pythagorean theorem, suitable for Grade 8 math students.
Distance on the Coordinate Plane
Calculate the distance between two points on a coordinate plane using the distance formula and Pythagorean theorem.
Similar Polygons Worksheet
Grade 8 math worksheet focusing on understanding and identifying similar polygons, including finding missing side lengths and angles.
Grade 8 Area Formulas Worksheet
Reinforce understanding of area formulas for various geometric shapes including triangles, rectangles, circles, and trapezoids for Grade 8 math students.
Area of Mixed Shapes
Calculate the area of various composite shapes including rectangles, triangles, and circles.