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Question

In Fig., AB || CD and ∠1 and ∠2 are in the ratio 3 : 2. Determine all angles from 1 to 8.

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Solution

In the given figure, AB || CD and t is a transversal line.
Now, let:
1=3x2=2x
Thus, we have:
1+2=180° Linear pair 3x+2x=180°5x=180°x=180°5=36°Thus,1=3×36°=108°2=2×36°=72°
Now,
1=5=108° Corresponding angles1=3=108° Vertically opposite angles5=7=108° Vertically opposite angles2=6=72° Corresponding angles4=2=72° Vertically opposite angles8=6=72° Vertically opposite angles

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