Question

Question 4 please does anyone know the answer
(Please write the steps too) :) :)

Answer 1

here is ur ans.
hope it may help you

Answer 2

let the unknown angles be x

x+(x - 20) + 70 = 180 (angle sum property

x+x -20 = 180 - 70

x+x - 20=110

2x=110+20

2x=130

x=130/2

x = 65

x - 20 =65 - 20 =45