Q: Do opposite angles in a parallelogram add up to 180?

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360 degrees. This complies with the rules of parallelograms. A parallelogram is a quadrilateral comprised of two sets of parallel lines. The opposite sides of a parallelogram are congruent, meaning that they have the same shape and size. The opposite angles are also congruent. Additionally, its consecutive angles are supplementary. This means that when when you add the two angles next to each other together, they will add up to 180 degrees, or a straight line. Since there are 4 corners in a parallelogram, and therefore 4 angles, you would have two sets of 180 degrees. Ergo, the angles in a parallelogram always add up to 360 degrees.

A parallelogram is a four-sided figure with opposite sides of equal length and angles not equal to 90 degrees (otherwise it would be a rectangle). Diagonally opposite angles will be equal, and adjacent angles will add up to 180 degrees.

No. In fact a parallelogram does not add up. It has a perimeter, it has an area, it has four angles and they are or can be added up. The the parallelogram itself cannot.

No because the 4 interior angles of a parallelogram add up to 360 degrees

A parallelogram has 2 equal opposite acute angles and 2 equal opposite obtuse angles whereas all 4 angles add up to 360 degrees.

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No.

It has 2 opposite equal acute angles and 2 opposite equal obtuse angles and the 4 angles add up to 360 degrees.

360 degrees. This complies with the rules of parallelograms. A parallelogram is a quadrilateral comprised of two sets of parallel lines. The opposite sides of a parallelogram are congruent, meaning that they have the same shape and size. The opposite angles are also congruent. Additionally, its consecutive angles are supplementary. This means that when when you add the two angles next to each other together, they will add up to 180 degrees, or a straight line. Since there are 4 corners in a parallelogram, and therefore 4 angles, you would have two sets of 180 degrees. Ergo, the angles in a parallelogram always add up to 360 degrees.

A parallelogram is a four-sided figure with opposite sides of equal length and angles not equal to 90 degrees (otherwise it would be a rectangle). Diagonally opposite angles will be equal, and adjacent angles will add up to 180 degrees.

yes. they add up to 180.

The question does not really make sense. Once might ask, "Are consecutive angles in a parallelogram complementary?" in which case the answer is no. Complementary angles are angles which add up to 90 degrees. Consecutive angles are angles next to each other (or follow each other). In a parallelogram, consecutive angles are supplementary (add to 180 degrees). In a parallelogram, opposite angles are equal. You could have a parallelogram where two angles are 45 degree (and thus complementary) and then the other two angles would be 135 degrees.

Yes. Since a parallelogram can be divided into two triangles, and since we know that the angles of every triangle add to 180 degrees, then twice 180 is 360.

No. In fact a parallelogram does not add up. It has a perimeter, it has an area, it has four angles and they are or can be added up. The the parallelogram itself cannot.

No because the 4 interior angles of a parallelogram add up to 360 degrees

A parallelogram has 2 equal opposite acute angles and 2 equal opposite obtuse angles whereas all 4 angles add up to 360 degrees.

No. In a parallelogram, adjacent angles are supplementary (they add up to 180°). A reflex angle is between 180° and 360°. So if one of the angles could be greater than 180°, then the adjacent angle would have to be negative, or else it is not a parallelogram. * * * * * All the EXTERNAL angles of a parallelogram are reflex angles!

They all add up to 360 degrees. Also, opposite angles are congruent (equal) and any two adjacent/consecutive angles add up to 180 degrees. This term is also called supplementary.