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Each game has 10 questions.

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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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Grade 7 - Shape and Space

Standard 7.SS.1 - Practice calculating the perimeter and radius of a circle based on the dimensions of a quarter circle.

Included Skills:

Demonstrate an understanding of circles by:

• describing the relationships among radius, diameter and circumference of circles;

• relating circumference to π;

• determining the sum of the central angles;

• constructing circles with a given radius or diameter;

• solving problems involving the radii, diameters and circumferences of circles.

Students who have achieved this outcome should be able to:

A. Illustrate and explain that the diameter is twice the radius in a given circle.

B. Illustrate and explain that the circumference is approximately three times the diameter in a given circle.

C. Explain that, for all circles, π is the ratio of the circumference to the diameter, (C/d), and its value is approximately 3.14.

D. Explain, using an illustration, that the sum of the central angles of a circle is 360°.

E. Draw a circle with a given radius or diameter with and without a compass.

F. Solve a given contextual problem involving circles.

If you notice any problems, please let us know.