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Geometry & measuresHigher

Circle theorems:Alternate segment

The angle between a tangent and a chord equals the angle in the alternate segment. From the tangent to the triangle, then back the other way, then finding the third angle at the tangent.

A free GCSE Higher geometry and measures lesson on circle theorems: alternate segment, 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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