Find m∠C in the figure, if AB || DC

CBSE Class 8 CBSE Class 8 Maths
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1

Find m∠C in the figure, if \overline { AB } || \overline { DC }.
image

2

Since AB || DC and transversal BC intersects
them.
∠B + ∠C= 180°
[∵ Sum of interior angles is 180°]
⇒ 120°+ ∠C =180° A
⇒ ∠C = 180°- 120° = 60°
Hence, m∠C =60°