Angle Relationships Worksheet
Geometry Math · printable worksheet (PDF) with answer key · 14 problems · CCSS HSG.CO.C.9
A printable geometry angle relationships practice worksheet with 14 problems and a complete, step-by-step answer key — formatted to print cleanly on standard paper. Included in the one-time $20 unlock for the full NudgeLearn library.
Sample problems
Show your work in the space provided. Complementary angles add to ; supplementary angles add to . Vertical angles (opposite angles formed by two crossing lines) are equal. By the Angle Addition Postulate, two adjacent angles that share a ray combine to form the larger angle.
- 1. Two angles are complementary. One measures . Find the measure of the other.
- 2. Two angles are supplementary. One measures . Find the measure of the other.
- 3. Two lines cross. One of the four angles measures . Find the measure of the angle directly opposite it (its vertical angle).
- 4. Find the value of . The two angles are complementary.
Plus 10 more problems and a full answer key in the PDF.
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