ABC is An isosceles triangle, PQR is a equilateral triangle within ABC

1.	ABC is An isosceles triangle, PQR is a equilateral triangle within ABC then find angle 'a'.
Answer» In equalateral all SIDE are equal but in ISOSCELES triangle only two side are equal ext angle +INT angle =180 so x+x+60+60=180. 2x+120=180. 2x=180-120. 2x=60. X=60upon2. X=30 so A=30

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ABC is An isosceles triangle, PQR is a equilateral triangle within ABC then find angle 'a'.

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