so letz take that i accept ur proof............

 

and setting u as an example..........

i am writing an exam.

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the question asked is

 

"prove angle in a semi-circle is 90.

 

by ur proof i say that......

 

just take compass...take O as centre......draw a circle.

take AB as diameter.take another point P on the circle.join AP and BP.

and then take protractor and measure it

it will be 90.

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itz CORRECT geometrically.............

 

 

and can u guess the mark that i will get for this question?

i dont want geometrical proof.can i hav a MORE THEORITICAL PROOF plz?