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In the given figure, the arms of two angles are parallel. If $\angle ABC = 70^{\circ}$, then find
$(i).\ \angle DGC$
$(ii).\ \angle DEF$"
Given:
In the given figure, the arms of two angles are parallel.
$\angle ABC = 70^{\circ}$.
To do:
We have to find
(i) $\angle DGC$
(ii) $\angle DEF$
Solution:
$AB \| DE$ [Given]
$BC \| EF$ [Given]
$\angle ABC=70^{\circ}$
$\angle ABC$ and $\angle DEF$ are a pair of corresponding angles.
This implies,
$\angle DEF=\angle ABC$
(i) $AB \| DE$
This implies,
$AB \| DG$
$\angle DGC=\angle ABC=70^{\circ}$ [Pair of corresponding angles]
(ii) $BC \| EF$
This implies,
$GC \| EF$
$\angle DEF=\angle DGC=70^{\circ}$ [Pair of corresponding angles]
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