READY-MADE CLASSROOM REVIEW

Geometry Basics Review

Geometry · Grades 6-8 · about 20 minutes. Project the board, share one room code, and keep the class on the same review.

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Check the clues and answers for your group. Answers stay hidden during live play until the host reveals them.

Foundations

$200

This is the sum of the exterior angles of any polygon.

$400

Two angles of a triangle measure 60° and 70°. This is the measure of the third angle.

$600

One angle in a supplementary pair measures 115°. This is the measure of the other angle.

$800

This is the measure of an angle that is three-eighths of a full turn.

$1000

One angle in a complementary pair measures 20°. This is the measure of the other angle.

Key Vocabulary

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This is the perimeter of a rectangle with length 8 cm and width 6 cm.

$400

Using 3.14 for pi, this is the circumference of a circle with diameter 10 cm.

$600

This is the area of a triangle with base 12 cm and height 5 cm.

$800

This is the area of a rectangle with length 9 cm and width 4 cm.

$1000

This is the area of a parallelogram with base 8 cm and height 6 cm.

Systems and Parts

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This is the volume of a cube with side length 6 cm.

$400

Using 3.14 for pi, this is the area of a circle with radius 6 cm.

$600

This is the volume of a rectangular prism measuring 4 cm by 5 cm by 6 cm.

$800

This is the area of a trapezoid with bases 8 cm and 13 cm and height 8 cm.

$1000

Using 3.14 for pi, this is the volume of a cylinder with radius 5 cm and height 4 cm.

Cause and Effect

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This point is the midpoint of the segment from (1, 1) to (7, 5).

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This is the distance between (0, 0) and (6, 8).

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This is the hypotenuse of a right triangle whose legs measure 3 and 4 units.

$800

This is the hypotenuse of a right triangle whose legs measure 8 and 15 units.

$1000

This is the hypotenuse of a right triangle whose legs measure 5 and 12 units.

Apply It

$200

A cube has this many faces.

$400

This is the sum of the interior angles of a pentagon.

$600

An octagon has this many sides.

$800

A rectangular prism has this many edges.

$1000

A regular pentagon has this many lines of symmetry.

Challenge Round

$200

This rotation about the origin maps (2, 1) to (1, -2).

$400

This is the area of a square with side length 4 units.

$600

This is the area of a triangle with vertices (0, 0), (8, 0), and (0, 5).

$800

Flipping a figure over the horizontal coordinate axis is this transformation.

$1000

This transformation changes the sign of a point's x-coordinate while leaving its y-coordinate unchanged.

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