Unlock harder levels by getting an average of 80% or higher.

Earn up to 5 stars for each level
The more questions you answer correctly, the more stars you'll unlock!

Each game has 10 questions.
Green box means correct.
Yellow box means incorrect.

Unlock harder levels by getting an average of 80% or higher.

Earn up to 5 stars for each level
The more questions you answer correctly, the more stars you'll unlock!

Each game has 10 questions.
Green box means correct.
Yellow box means incorrect.

More Ways To Use Math Games
Game Quickplay
Video Help

Need some help or instruction on how to do this skill?

Offline Worksheets

Want a paper copy? Print a generated PDF for this skill.

Top Mathematicians Leaderboards

See how you scored compared to other students from around the world.

Start a MathJam

Learn Math Together.

Math Games for Teachers

Grade 8 - Space and Shape (Geometry)

Standard 8.G.3.1.1 - Practice identifying right, obtuse and acute triangles.

Included Skills:

Classifying 2D shapes
Identify and write clear definitions of triangles in terms of their sides and angles, distinguishing between:
- equilateral triangles
- isosceles triangles
- right-angled triangles
Identify and write clear definitions of quadrilaterals in terms of their sides and angles, distinguishing between:
- parallelogram
- rectangle
- square
- rhombus
- trapezium
- kite

If you notice any problems, please let us know.