Question

In the given figures, show that l || m.​

Answer 1

Answer:

In ∆ CED

/_ E + /_D + /_DCE = 180

45 + 35 +/_DCE = 180

/_ DCE = 100

Ans We know

/_ DCE + /_ FCD = 180

/_ FCD = 180- 100

/_ FCD = 80°

So we get that /_ ABC = /_FCD

So we get that if /_ABC = /_FCD it forms corresponding /_ with line l and m

so l || m

Hence proved.