Definitions and facts from the NSW Year 7 Angles Topic
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are angles measured in? | degrees
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| An instrument for measuring the size of an angle | protractor
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| The corner or point of an angle. | vertex
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| What type of angle has a measure between 0° and 90°? | acute
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| What type of angle has a measure of 90°? | right
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| What type of angle has a measure between 90° and 180°? | obtuse
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| What type of angle has a measure of 180°? | straight
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| What type of angle has a measure between 180° and 360°? | reflex
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| What type of angle has a measure of 360°? | revolution
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| When an angle is named using 3 letters the ________ letter must be the middle letter | vertex
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| Two angles that add up to 90° | complementary angles
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| Two angles that add up to 180 | supplementary angles
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| Vertically opposite angles are _________ in size | equal
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| What do angles at a point add up to? | 360°
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| Lines that point is the same direction and do not intersect | parallel lines
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| Lines that intersect at right angles | perpendicular lines
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| A line that cuts across two or more other lines | transversal
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