Question

Class 8 cbse maths ex 3.3 question no. 10
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Answer 1

Answer:

Step-by-step explanation:

angle m + angle l = 100+80

                             = 180

[ Int.supp angle ]

so mn||kl

Answer 2

Answer:

m+n=180 (adjacent angle )

100+80

=180

K+L = 180 ( adjacent angle)

k+ 80=180

k=180-80

k=100

k+N=180

100+N=180

N=180-100

N=80

NM||KL. (sum of interior opposite angles is 180° ) So, KLMN is a trapezium