Given ta is parallel to tb and tb is parallel to tc
(a)To prove: ta and tc are parallel
Let θ1, θ2 and θ3 be the angle shown in the figure.
When two lines are parallel, their respective corresponding angles are equal.
So here θ1= θ2 and θ2= θ3
It can be concluded that θ1= θ2= θ3
Which implies θ1 = θ3
Which implies ta and tc are parallel.
To prove: X*Y*Z
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