Chord segment theorem editable PowerPoint year 9/year 10

An editable PowerPoint presentation about the chord segment theorem. It explains the theorem visually and goes through some example questions that are IGCSE style, so alterations of exam questions of earlier years. The red ticks tell that if you got that far, you've got a mark, but obviously those can be removed if you want to use those just as general examples.

In the Common Core system, this falls under HSG-C.A.2.

Content:

Introducing the formula

Visualising the alternative version with triangles

Example where chords meet inside the circle x2

Example where there is a chord and a radius

Theory of the meeting point being outside the circle

Example of the point being outside the circle

Example of application questions x3

Answers to all model questions are provided, but students have the opportunity to try themselves first. 25 editable slides in total. Having 7 examples altogether this should take a whole lesson in an average classroom without extra material.