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A parallelogram does not equal 180. A parallelogram is a plane figure bounded by two pairs of parallel lines.

What does equal 180 is the sum of the measures of any pair of adjacent angles.

The two adjacent angles have a side in common. If that line is considered as the intercept of the pair of parallel lines, it is easy to show that the angles should add to 180 degrees.

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โˆ™ 2009-12-02 11:54:15
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Q: Why does a parallelogram equal to 180?
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Related questions

Are the top angles in a parallelogram equal to 180 degrees?


In a parallelogram consecutive angles are always?

In a parallelogram consecutive angles are always supplementary. This means they equal 180.

Does a parallelogram equal 180 degrees?

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

Are all angles of a parallelogram equal to 90 degrees?

No, only in a square (regular parallelogram).The opposite angles are EQUAL in a parallelogram, and the adjacent angles are SUPPLEMENTARY(they equal 180 degrees).So if any angle in a parallelogram is a right angle, they all are. Otherwise, there are no right angles.The angles of a parallelogram will average 90 degrees, as there are 360 degrees in any quadrilateral, (360/4 - 90) and 180 degrees in two adjacent non-equal angles (180/2 = 90).

Do the opposite angles of a parallelogram equal 180 degree?

No, not necessarily. Think of a rhombus that is not a square. Its opposite angles are equal - either both acute (sum < 180) or both obtuse (sum >180).

Do opposite angles in a parallelogram add up to 180?

No. Opposite angles are equal. Adjacent angles are supplementary.

Can a parallelogram be less than 360 degrees?

a parallelogram is a 4 sided polygona triangle is 3 sided and its angles equal 180 degrees no matter whatfor every side added, 180 degrees is added also.therefore, a parallelogram can only be 360 degrees and no lessthe answer is no

What is a parallelogram with one interior angle equal to 90?

It is a square, a regular parallelogram with all right angles. The reason is that in a parallelogram, the adjacent angles are supplementary (equal 180 degrees).In any case, the opposite angle would be 90 degrees as well, leaving just 180 degrees for the other two identical opposite angles.

How many degrees in a parallelogram?


Does a parallelogram have equal diagonals?

Not necessarily. A parallelogram with equal diagonals would be a rectangle; a special case of a parallelogram.

What angles does a parallelogram have?

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

What is a parallelogram where all sides are equal?

A parallelogram where all sides are equal is a square.

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