Three angles of a quadrilateral are in the ratio of 2:3:7 the mean of these angles is 64 degree find all four angles?
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Answer:
Angles are = 40 , 60 , 140 , 120
Step-by-step explanation:
Let angles are A , B , C , D
A + B + C + D = 360 [ A.S.P] ---------i
Also
A + C = 180 [ SUM OPP. ANGLES OF QUAD. ARE 180]
2x + 7x = 180
9x = 180
x = 20
A = 40
B = 60
C = 140
USE THESE ANGLES IN i
40 + 60 +140 +D=360
240 + D = 360
D = 120
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