Question

ABCD is a parallelogram. Side DC of the parallelogram is produced to E. IF exterior ∠C = 110°, then ABC is equal to

Answer 1

Answer:

110°

Step-by-step explanation:

exterior Angle C = 110°

then Angle DCB + Angle BCE = 180 (A straight line makes an angle of 180°)

110° + Angle DCB = 180°

Angle DCB = 70°

Angle DCB + Angle ABC = 180° (Linear Pair)

Angle ABC + 70° = 180°

Therefore, Angle ABC = 110°