3x+ 8x+2x-50-5+4+90=360
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Answer:
Step-by-step explanation:
3x-5+8x-15+2x+4+90°=360°
13x+74=360°
13x=360-74
13x=286
x=286/13
x=22
angles of quadrilateral:-
(i) 3x-5=3×22-5
=66-5
=61°
(ii)8x-15=8×22-15
=176-15
= 161°
(iii) 2x+4=2×22+4
= 44+4
=48°
(iv) 90°
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