Question
In Fig. show that
- $AB || CD$
- $EF || GH$
✓
Answer
- From the given figure,
$\Rightarrow\angle\text{CIF}=180^\circ-\angle\text{FIJ}=180^\circ-50^\circ=130^\circ$
Now, $\angle\text{ALI}+\angle\text{CIF}=130^\circ$
$\therefore \text{ AB }|| \text{ CD}$ as their corresponding angles are equal.
- From the given figure,
$\Rightarrow\angle\text{LKJ}=180^\circ-\angle\text{GKL}=180^\circ-50^\circ=130^\circ$
Now, $\angle\text{ALI}+\angle\text{LKJ}=130^\circ$
$\therefore \text{ EF }|| \text{ GH}$ as their corresponding angles are equal.
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