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To find the angles of a parallelogram, you have to know at least one angle (although it could be an interior or an exterior angle). There are several facts about all parallelograms:
- the sum of the interior angles is 360˚ (true for all quadrilaterals)
- opposite angles are congruent (angles that are diagonal in parallelograms have the same measure)
- consecutive angles are supplementary (angles that are connected by a single side add up to 180˚)
If you know any of the interior angles, you can use a combination of the above rules to find the rest. If all you know is an exterior angle, then use the fact that an interior angle and its exterior angle are supplementary (because they are a linear pair--they make a line) to find the measure of the interior angle; then use the rules given above.
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Are consecutive angles in a parallelogram always congruent?
Not unless the parallelogram is a rectangle. In every parallelogram, consecutive angles are supplementary.
What do the angles of a parallelogram add up to?
The angles in a parallelogram add up to 360 degrees
Is a parallelogram always have 4 right angles?
A parallelogram does not have to be four right angles. A parallelogram is a four sided shape with two parallel lines.
The sum of the angles of a parallelogram is 180 true or false?
False, the sum of the angles in a parallelogram is 360 degrees.
Opposite angles in a parrallelogram are?
Opposite angles of a parallelogram are congruent.
