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###### circle theorem q help!

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1 year ago

could somebody help me with this circle theorem? i’ll add a picture x

(edited 1 year ago)

Reply 1

1 year ago

h = 90 degrees

If all three points of the triangle are on the edge of the circle and one of the sides is the diameter, then that angle will always be 90 degrees

If all three points of the triangle are on the edge of the circle and one of the sides is the diameter, then that angle will always be 90 degrees

Original post by aalmondmilk

could somebody help me with this circle theorem? i’ll add a picture x

This is one of the circle theorems ... look them up - you have an angle in a semi-circle

Reply 3

1 year ago

Original post by aalmondmilk

could somebody help me with this circle theorem? i’ll add a picture x

Here is a link to the proof.

http://www.timdevereux.co.uk/maths/geompages/proof2.php

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