Ages 12–14🧮 MathematicsBeing planted

Understanding angles (age 12+)

Use ruler and compasses to perform standard constructions: perpendicular bisector of a line segment, perpendicular to a line from or at a given point, and bisecting an angle

A first look

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Question 1 of 3

When a student correctly constructs the perpendicular bisector of a line segment AB using a compass and straightedge, which statement must be true about the line they have drawn?

Question 2 of 3

Angle XYZ measures 80°. After constructing the angle bisector of angle XYZ, what is the measure of each of the two smaller angles formed?

Question 3 of 3

Which of the following describes the correct first steps for constructing the perpendicular bisector of a line segment AB using only a ruler and compass?

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Skill names and descriptions include the Marble Skill Taxonomy © Generative Spark, Inc. (withmarble.com), licensed under ODbL 1.0 (database) and CC BY-SA 4.0 (content). Practice questions are GlowGrades's own, each checked by independent verifiers that must agree before a child ever sees it.