given that AOB and COD are straight lines, find the values of the unknown in each of the above figures☝
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Step-by-step explanation:
a)103 + 7a = 180( cd is a straight line)
7a = 180 - 103
7a = 77
a = 11
2b + 13 = 103 ( vertically opposite angle )
2b = 103 - 13
2b = 90
b = 45
c )7f + 5 = 2f + 35(vertically opposite angle )
7f - 2f = 35 - 5
5f = 30
f = 6
5g + 18 = 2f + 35( ab is a straight line)
5g = 2*6 + 35 - 18
5g = 12 + 35 - 18
5g = 47 - 18
5g = 29
g = 5. 8
Answered by
6
a)103 + 7a = 180( cd is a straight line)
7a = 180 - 103
7a = 77
a = 11
2b + 13 = 103 ( vertically opposite angle )
2b = 103 - 13
2b = 90
b = 45
c )7f + 5 = 2f + 35(vertically opposite angle )
7f - 2f = 35 - 5
5f = 30
f = 6
5g + 18 = 2f + 35( ab is a straight line)
5g = 2*6 + 35 - 18
5g = 12 + 35 - 18
5g = 47 - 18
5g = 29
g = 5. 8
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