No, not all the angles in a parallelogram are equal. In a parallelogram, opposite angles are equal, but consecutive angles (angles next to each other) are supplementary, meaning they add up to 180 degrees. Specifically:

• If $\angle A$ and $\angle C$ are opposite angles, then $\angle A = \angle C$.
• Similarly, if $\angle B$ and $\angle D$ are opposite angles, then $\angle B = \angle D$.
• However, $\angle A + \angle B = 180^\circ$ (and the same goes for $\angle C + \angle D = 180^\circ$).

This means that while opposite angles are equal, the adjacent angles are not necessarily equal to each other.

Would you like more details or have any questions?

Here are some related questions:

1. How can you prove that opposite angles in a parallelogram are equal?
2. What is the difference between a parallelogram and a rectangle in terms of angles?
3. How do the angles in a rhombus compare to those in a parallelogram?
4. Can a parallelogram have all angles equal, and if so, what is it called?
5. How does the sum of the angles in a parallelogram compare to other quadrilaterals?

Tip: In any quadrilateral, the sum of all interior angles is always $360^\circ$.