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18 ) let the angles be 4x and 5x
4x + 5x = 180^. ( angle sum property )
9x = 180^.
x = 180 / 90
x= 2 ^.
the measure of 4x = 8
the measure of 5x =10
the measure of 9x = 18 ( which is the sum of 5x and 4x )
4x + 5x = 180^. ( angle sum property )
9x = 180^.
x = 180 / 90
x= 2 ^.
the measure of 4x = 8
the measure of 5x =10
the measure of 9x = 18 ( which is the sum of 5x and 4x )
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