Question

on interior angles on the same side of transversal( co-interrior angles)​

Answer 1

(i).

ANGLE a= 120° ( corresponding angles )

(ii).

ANGLE a+100°=180° ( co interior angles )

ANGLE a= 180-100

ANGLE a= 80°

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Answer 2

a=120° (corresponding angles)

let a and b be the interior angles on same side of transversal .

therefore a+b=180

120+b=180

b=180-120

b=60