Question 1 [1 mark]
Right angle
Mark scheme
- A [1] — cao Right angle
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Right angle
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Straight angle
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Acute angle
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110°, 70°, 70°
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Acute angle
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144°, obtuse angle
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Obtuse angle
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Reflex angle
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80°, acute angle
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30°, 60°, 90°, right-angled triangle
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Obtuse angle
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91°
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181° or 359°
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Obtuse angle
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Obtuse angle
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Right-angled triangle
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Acute angle
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Obtuse angle
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Obtuse angle
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Acute angle
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Obtuse angle
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Acute angle
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Acute angle
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Obtuse angle
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Obtuse angle, 180 sides
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Reflex angle, 160°
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Acute angle
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60° acute, 70° acute, 80° acute, 90° right
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32°, 96°, 52°, obtuse-angled triangle
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290°, reflex angle
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