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Opposites sides of a parallelogram are parallel and congruent True or false?
True
Is it true that a parallelogram sides are all congruent?
It is possible, but not always true. A parallelogram just means that it is a quadrilateral with 2 pairs of parallel sides.
Why are the diagonals of a parallelogram not congruent?
If you look ate the parallelogram you'll see two kinds of triangles. Two that have longer diagonal and bigger angle, and two sides of parallelogram. Then, you have two triangles that have two sides of parallelogram, shorter diagonal and smaller angle. This triangles obviously have two sides that are the same (sides of parallelogram). If this two triangles had been congruent diagonals would have been congruent too, since these triangles would have been congruent. But this is not true unless angles of parallelogram are the same, therefore diagonals cannot be the same length. Of course, there are parallelograms that have same angles, and those are square and rectangle, which do have the same angles. I hope I made this more clear, and I'm sorry for my bad English.
Do congruent polygons have congruent sides and congruent angles?
True TeTe <3
A quadrilateral is a figure with no two sides congruent and parallel true or false?
False. The sides can be congruent, parallel or both.
