Exercises: Precise Definitions of Geometric Terms

Work through each section in order. For short-response questions, write complete sentences.

Grade 9·20 problems·~30 min·Common Core Math - HS Geometry·standard·hsg-co-a-1

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Fluency Practice

Apply the precise definitions of each term.

$Two perpendicular lines crossing at a point, with right-angle boxes marking all four 90-degree angles.$

Two lines are perpendicular if they intersect to form angles of what measure?

$45^\circ$

$90^\circ$

$180^\circ$

Any equal angle measure