Lesson deck
Geometry & measuresHigher
Circle theorems:Chords
The line from the centre at 90 degrees cuts a chord in half, which makes a right-angled triangle. Pythagoras gives the chord, then the distance from the centre, then the radius.
A free GCSE Higher geometry and measures lesson on circle theorems: chords, 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.
Higher
Circle theorems:Chords
Exit ticket
Circle theorems:Chords
Puzzle
Code breaker:Circle theorems
Test
Circle theorems test:Higher
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