In isosceles triangle ABC if angle A is 40 degree find value of exterior angle x and y
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exterior angles x =110 degreeand y = 110 degree
Step-by-step explanation:
angle A=40degree
angle B+angle C =180 - 40 (angle sum)
=140degree
angle B = angle C (isoceles triangle)
=140÷2 = 70 degree
exterior angles x and y =
x = y
=180 - 70 (linear pair)
=110degree
therefore exterior angles x = 110 degree and y = 110 degree
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