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Geometry & measuresHigher

Area of a triangle:½ab sin C

Two sides and the angle between them: the height first as side × sin angle, then a frame for ½ × side × side × sin angle. Then no frame, then the area is given and a side is found.

A free GCSE Higher geometry and measures lesson on area of a triangle: ½ab sin C, spec code G23. 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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