Question

on the given 21 = 60° and 26 = 120°, show that the lines
mand n are parallel.
21
4
265
748
​

Answer 1

since 'm' is a straight line

so angle1 + angle 2 = 180°

60° + angle 2 = 180°

angle 2 = 120°

since 'n' is a straight line,

so angle5 + angle6 =180°

angle5 + 120° = 180°

angle 5 = 60°

this given line (which is a straight line) intersects both "m" and "n" and the angle bisected is same hence, the lines 'm' and ' n' are parallel.

Answer 2

hope it helps you. the answer is in the attachment..