Question

If ZX² = XY² + YZ² is true then which of the following property is involved? 
Vertically opposite angles

Angle sum property 

Pythagoras property

Linear pair property

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Answer 1

Hello, the correct answer is 'PYTHAGORAS THEOREM'

Pythagoras Theorem says that

$hypotenuse^{2}$ = $side^{2} + side^{2}$

And is only possible in the case of a right-angle triangle which is given in the pic (Y=90 degree)

Hope it helps :)