in the adjacent figure a b parallel to CD T is a transversal intercepting E and F respectively if angle two ratio angle 1 is equals to 5 :4 find the measure of each marked angles
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Given : ∠2 : ∠1 = 5:4
To find : all angles
Explanation:
let the angle be x
thus
5x + 4x = 180 (linear pair )
9x = 180
x = 20°
now ,
5x = 5×20 =100°
4x = 4×20 = 9=80°
from the figure ,
(alternate interior angles )
(alternate interior angles )
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