This math topic focuses on practicing geometric skills related to angles. The tasks include estimating angles, with an emphasis on reversed referencing, as part of a larger unit on Geometry - Angle Basics. Students are given a displayed angle value and need to identify another given angle. The problems mainly concentrate on recognising common angles such as 15°, 30°, 45°, 90°, 120°, and 135°.
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If the displayed angle is 75°, which angle shows 60°?