l || m

**Answer 1**

∠7 = 180 – ∠5 – ∠6 = 180-38-62 = 80 (because ∠5,6,7 make a straight line = 180)

∠7 = ∠3 (because l||m, and these angels make a Z shape)

So ∠3 is also 80 degrees.

**Answer 2**

m<7 = 180 - (38 + 62) = 80 degrees (supplementary angles) m<3 = m<7 = 80 degrees (alternate angles) third choice

**Answer 3**

∠ 7 and ∠ 3 are ALTERNATE INTERIOR ANGLES…

what do you know about alternate interior angles when two lines are parallel ?

You must know something !!

m∠5 + m∠6 + m∠7 = 180º

given m∠5 and m∠6, m∠7 = ?? Do something !!

What did you get ??

[m ∠3 = 80º ]

**Answer 4**

LOL its 38º

linear pair = 180º

alternate angles

and sum of interior angle of triangle

easy

Source(s): my mind