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Common Core MathK - 8
High School

Grade 8: Geometry
1731 questions13 skills

8.G.A.1

21 questions1 skill

Verify experimentally the properties of rotations, reflections, and translations:

Properties of rigid transformations

8.G.A.1a

21 questions1 skill

Lines are taken to lines, and line segments to line segments of the same length.

Properties of rigid transformations

8.G.A.1b

21 questions1 skill

Angles are taken to angles of the same measure.

Properties of rigid transformations

8.G.A.1c

21 questions1 skill

Parallel lines are taken to parallel lines.

Properties of rigid transformations

8.G.A.2

30 questions1 skill

Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them.

Exploring rigid transformations and congruence

8.G.A.3

27 questions1 skill

Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.

Performing transformations on the coordinate plane

8.G.A.4

24 questions1 skill

Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.

Exploring angle-preserving transformations and similarity

8.G.A.5

1000 questions5 skills

Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles.

Congruent angles

Parallel lines 1

Parallel lines 2

8.G.B.6

Explain a proof of the Pythagorean Theorem and its converse.

Skills for this standard are coming soon.

8.G.B.7

400 questions2 skills

Apply the Pythagorean Theorem to determine unknown side lengths in right triangles in real-world and mathematical problems in two and three dimensions.

Pythagorean theorem

Special right triangles

8.G.B.8

200 questions1 skill

Apply the Pythagorean Theorem to find the distance between two points in a coordinate system.

Distance formula

8.G.C.9

29 questions1 skill

Know the formulas for the volumes of cones, cylinders, and spheres and use them to solve real-world and mathematical problems.

Volume word problems with cones, cylinders, and spheres