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 Angles 40 Flashcards |
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What is the common starting point of two rays that form an angle called? |
Card: 1 / 40 |
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Vertex |
Card: 2 / 40 |
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Which angle measures exactly 90°? |
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Right Angle |
Card: 4 / 40 |
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Fill in the blank: The area between the two arms of an angle is called its ______. |
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Interior |
Card: 6 / 40 |
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True or False: An angle measuring more than 180° but less than 360° is called an obtuse angle. |
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False. It is called a reflex angle. |
Card: 8 / 40 |
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Riddle: I am formed when two lines cross, with no common arm, and I am always equal. What am I? |
Card: 9 / 40 |
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Vertically Opposite Angles |
Card: 10 / 40 |
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How many degrees are in a complete angle? |
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360° |
Card: 12 / 40 |
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Which type of angle is more than 0° but less than 90°? |
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Acute Angle |
Card: 14 / 40 |
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Fill in the blank: Two angles that add up to 90° are called ______ angles. |
Card: 15 / 40 |
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Complementary |
Card: 16 / 40 |
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True or False: The sum of angles around a point is 180°. |
Card: 17 / 40 |
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False. The sum of angles around a point is 360°. |
Card: 18 / 40 |
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What do we call two angles that share a common arm and vertex but lie on opposite sides of that arm? |
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Adjacent Angles |
Card: 20 / 40 |
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Multiple Choice: What is the measurement of a straight angle? A) 90° B) 180° C) 360° D) 0° |
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B) 180° |
Card: 22 / 40 |
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Fill in the blank: An angle that measures exactly 0° is called a ______ angle. |
Card: 23 / 40 |
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Zero |
Card: 24 / 40 |
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True or False: Congruent angles have different magnitudes. |
Card: 25 / 40 |
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False. Congruent angles have the same magnitude. |
Card: 26 / 40 |
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Riddle: I measure how much one ray rotates to meet another, and my unit is degrees. What am I? |
Card: 27 / 40 |
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Magnitude of an Angle |
Card: 28 / 40 |
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What is the formula for supplementary angles? |
Card: 29 / 40 |
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∠A + ∠B = 180° |
Card: 30 / 40 |
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Fill in the blank: An angle formed by one full rotation of a ray is called a ______ angle. |
Card: 31 / 40 |
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Complete |
Card: 32 / 40 |
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Multiple Choice: Which angle measures less than 90°? A) 45° B) 90° C) 120° D) 180° |
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A) 45° |
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What tool is used for measuring and constructing angles? |
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Protractor |
Card: 36 / 40 |
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Fill in the blank: The outer scale of the protractor measures angles in the ______ direction. |
Card: 37 / 40 |
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Clockwise |
Card: 38 / 40 |
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What type of angle measures exactly 90°? |
Card: 39 / 40 |
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Right Angle |
Card: 40 / 40 |
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Completed! Keep practicing to master all of them. |
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