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Questions and Answers
What is the measure of a reflex angle?
What is the measure of a reflex angle?
- Exactly 180°
- More than 180° but less than 360° (correct)
- Less than 90°
- Exactly 360°
Which of the following angles could be part of a pair of complementary angles?
Which of the following angles could be part of a pair of complementary angles?
- 100° and 80°
- 45° and 145°
- 90° and 90°
- 60° and 30° (correct)
What defines a whole angle?
What defines a whole angle?
- An angle measuring more than 270°
- An angle measuring less than 180°
- An angle measuring exactly 90°
- An angle measuring exactly 360° (correct)
Which pair of angles are supplementary angles?
Which pair of angles are supplementary angles?
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What is a necessary characteristic of complementary angles?
What is a necessary characteristic of complementary angles?
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Study Notes
Reflex Angle
- An angle larger than a straight angle (180°) but smaller than a whole angle (360°).
- Measured between 180° and 360°.
Whole Angle
- An angle measuring exactly 360°.
- Represents a full circle.
Complementary Angles
- Two angles that add up to 90°.
- Form a right angle together.
Supplementary Angles
- Two angles that add up to 180°.
- Form a straight angle together.
- Complementary and supplementary angles can be adjacent or non-adjacent.
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