Last updated: October 22, 2026 · Written by the Math Made Easy math teachers
Looking for an angle relationships quiz? Then this Grade 7 quiz on Angle Relationships and Unknown Angles asks 10 multiple-choice questions with instant feedback. This quiz has 10 multiple-choice questions on complements, supplements, vertical angles and simple angle equations. The wrong options come from typical errors, such as using 180 for a complement or treating adjacent angles as equal.
Standards: 7.G.B.5 · Level: Grade 7
What this Angle Relationships and Unknown Angles quiz checks
- Complementary angles: sum 90°.
- Supplementary angles: sum 180°, as on a straight line.
- Vertical angles are equal; neighbors at an intersection are supplementary.
- Angles around a straight line on one side add to 180°.
- Check each answer by substituting back into the sum.
The 10 questions of the quiz
- What is the complement of a 63° angle?
- What is the supplement of a 74° angle?
- Two lines cross as shown. What is the measure of the angle vertical to the 55° angle?
- Which pair of angle measures is complementary?
- Two angles are supplementary. One is x° and the other is (2x + 15)°. What is x?
- Vertical angles measure (5x + 8)° and (8x − 22)°. What is x?
- Which statement is always true?
- The two angles lie on a straight line. What is x?
- An angle equals its own complement. What is the angle?
- Which description fits adjacent angles?
After the quiz
Missed a question? Reread the Angle Relationships and Unknown Angles lesson, then take the quiz again. Next, solve the Grade 7 worksheet on Angle Relationships and Unknown Angles, one star first, then two and three stars. Finally, take the chapter test under real conditions, without notes and with a timer.
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