Question

In the above figure (not to scale), l || m, l1 || m1,

and p || q such that ∠1 = 90°, ∠2 = 130°, and

∠3 = 70°. Find ∠4.​

Answer 1

Step-by-step explanation:

l 1 = 90 degree

l 2 = 130 degree

l 3 = 70 degree

l 4 = ?

l 1 + l 2 + l 3 + l 4 = 360 degree

90 + 130 + 70 + l 4 = 360 degree

280 + l 4 = 360 degree

l 4 = 360 - 280

l 4 = 80 degree

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