Question

In fig. if AB ll DE,

Answer 1

Answer:

angle A=30degree, angle D=50 degree ......(given)

angle A =angle E.....(Alternate angles theorem)

therefore, angle E= 30 degree......i

Now,In triangle CDE,

Angle D+Angle E+Angle C=180degree.....(Sum of all angles of a triangle is 180 degree)

50+30+angleC=180

80+angle C=180

angle C=180-80

therefore angle C=100 degree