Question

what do you notice about the angles on opposite sides of point h? they are supplementary. they have the same measure.

Explanation:

Looking at the angles around point \(H\), we can see that the angles on opposite sides of point \(H\) (i.e., vertical angles) have the same measure. For example, one pair of vertical angles is \(129^{\circ}\) and another pair is \(51^{\circ}\). Supplementary angles add up to \(180^{\circ}\), but the key observation here is about the equality of measures of vertical angles.

Answer:

They have the same measure.