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.

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Math Games for Teachers

Grade 8 - Geometry and Spatial Sense

Standard 8.GSS.1 - Find the angle sum of interior angles of polygons.

Included Skills:

Geometric Properties
sort and classify quadrilaterals by geometric properties, including those based on diagonals, through investigation using a variety of tools (e.g., concrete materials, dynamic geometry software) (Sample problem: Which quadrilaterals have diagonals that bisect each other perpendicularly?);
construct a circle, given its centre and radius, or its centre and a point on the circle, or three points on the circle;
investigate and describe applications of geometric properties (e.g., properties of triangles, quadrilaterals, and circles) in the real world.

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