What is a parallelogram?
Parallelogram Properties

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Mathematics
•
9th - 10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A parallelogram is a four-sided figure (quadrilateral) where opposite sides are parallel and equal in length.
2.
FLASHCARD QUESTION
Front
What are the properties of a parallelogram?
Back
1. Opposite sides are equal in length. 2. Opposite angles are equal. 3. The diagonals bisect each other.
3.
FLASHCARD QUESTION
Front
What does it mean for diagonals to bisect each other?
Back
It means that each diagonal divides the other into two equal parts.
4.
FLASHCARD QUESTION
Front
Are the diagonals of a parallelogram always congruent?
Back
No, the diagonals of a parallelogram are not always congruent; they are only congruent in rectangles and squares.
5.
FLASHCARD QUESTION
Front
If one angle of a parallelogram is 70 degrees, what are the measures of the other angles?
Back
The opposite angle is also 70 degrees, and the adjacent angles are 110 degrees each.
6.
FLASHCARD QUESTION
Front
How do you find the length of a side in a parallelogram if you know the lengths of the other sides?
Back
In a parallelogram, opposite sides are equal, so if you know one side, the opposite side will have the same length.
7.
FLASHCARD QUESTION
Front
What is the relationship between the angles of a parallelogram?
Back
The opposite angles are equal, and the adjacent angles are supplementary (add up to 180 degrees).
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