Friday 10 April 2015

CONGRUENCE OF TRIANGLES 1




Prove that the following triangle is isosceles.




solution

Given: triangle QRT with R produced to X.
Required to prove: QRT is isosceles
Proof: 

QX = XT (given)

<RXQ = <RXT = 900 (<QXT is a straight angle)

RX = XR (common line)

RXQ  RXT by SAS rule


Hence QRT is isosceles (proved)



No comments:

Post a Comment