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ajprincessBest ResponseYou've already chosen the best response.1
dw:1353828858730:dw Since AB=AC triangle ABC is an isosceles triangle. So y=5x40 y and 5x are supplementary angles y+5x=180 5x40+5x=180 10x40=180 Can u find x @Kagome_gurl8?
 one year ago

Aditi_SinghBest ResponseYou've already chosen the best response.0
being an isosceles triangle, <SRT = <STR = 5x40 Now, <STR + <STU = 180 degrees  they both form a linear angle. => 5x40 + 5x = 180 , Solve it for x now :)
 one year ago

zonazooBest ResponseYou've already chosen the best response.0
well the base angles of an isosceles triangle are equal, so since that angle in the bottom left of the triangle is 5x  40, then so is the angle on the bottom right... and the angle on the bottom right and the angle just outside the triangle are what we call a linear pair, and a linear pair are two angles that add up to 180 degrees, and just as shown above, you add those two angles together to get 180 and solve for x.
 one year ago

Kagome_gurl8Best ResponseYou've already chosen the best response.0
I got x=22, is that correct?
 one year ago

zonazooBest ResponseYou've already chosen the best response.0
no... what were your steps?
 one year ago

zonazooBest ResponseYou've already chosen the best response.0
yes you are right , sorry
 one year ago

Aditi_SinghBest ResponseYou've already chosen the best response.0
Yep, you are correct !
 one year ago

Kagome_gurl8Best ResponseYou've already chosen the best response.0
Thank you all very much.....
 one year ago
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