Question

Can someone help me solve this?

Answer 1

<a = 60 / 2 = 30
<b = 84/2 = 42
<c = (60 + 100)/2 = 160/2 = 80
d = 360 - 100 - 60 - 84 = 116

Answer 2

D+84+60+100 should equal 360, so find the value of D.