Question

hd and
eg are parallel lines. which angles are supplementary angles?
∠dca and ∠efh
∠dca and ∠bcf
∠dca and ∠bca
∠dca and ∠gfc

Explanation:

Step1: Recall supplementary - angle definition

Two angles are supplementary if their sum is 180 degrees. Adjacent angles that form a straight - line are supplementary.

Step2: Analyze the given angles

In the figure, $\angle DCA$ and $\angle BCA$ form a straight - line $BA$. So, $\angle DCA+\angle BCA = 180^{\circ}$.

Answer:

$\angle DCA$ and $\angle BCA$