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Geometry & measuresHigher

Circle theorems:Angle in a semicircle

The angle in a semicircle is 90 degrees, then angles in a triangle to find the missing angle. Moves to angles given as x and 2x.

A free GCSE Higher geometry and measures lesson on circle theorems: angle in a semicircle, spec code G10. It has a lesson deck to teach from with a visualiser, a worksheet with answers, a puzzle, an exit ticket and an end of unit test.

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