0
Add your answer:
Earn +20 pts
Which quadrilateral has opposite sides that are not parallel and have angles that are not equal?
All quadrilaterals apart from rectangles. Even parallelograms have adjacent angles that are not equal.
What are the 5 properties of parallelograms?
If one angle is right, then all angles are right. The diagonals of a parallelogram bisect each other. Opposite angles are congruent. Opposite sides are congruent. Consecutive angles are supplementary.
What are the types of parallelogram?
A parallelogram has opposite sides parallel and equal in length, and opposite angles are equal. Squares, rectangles and rhombuses are all parallelograms.
Can a rhombus be a parallelogram?
All rhombuses are paralleleograms. Rhombuses are parallelograms in which all four sides are the same length (and the opposite angles are congruent). Squares are rhombuses in which all four angles are right.
How are a rectangle and parallelogram alike?
Similarities: Four Sides Opposite Sides are of equal length and parallel Differences All angles of a rectangle are 90 degrees while the parallelogram has angles which are supplementary (add up to 180 degrees). All rectangles are parallelograms while not all parallelograms are rectangles.
What describes the angles of some parallelograms?
In all parallelograms, opposite angles are equal and the 4 interior angles add up to 360 degrees. In someparallelograms, all of the angles are 90 degrees. These parallelograms are rectangles.
What shape is a square but not a parelellogram?
No shape is a square but not a parallelogram as all squares are parallelograms: All parallelograms have opposite sides parallel and of equal length, and opposite angles are equal. All squares have opposite sides that are parallel and of equal length, and opposite angles are equal; thus all squares are parallelograms. However, all squares also have all angles equal to 90o and all four sides equal, but some parallelograms have angles not all 90o and/or not all four sides of equal length; thus not all parallelograms are squares.
Do all parallelograms have diagonals which bisect?
Yes; all parallelograms have diagonals that bisect each other. Other properties of parallelograms are: * The opposite sides are congruent. * The opposite sides are parallel. * The opposite angles are congruent.
Do parallelograms have to be squares?
No.Parallelograms have two pairs of parallel opposite sides; they do not have to be the same length.The opposite angles of a Parallelogram are equal; they do not have to be 90oA square is required to have all sides equal (opposite sites will be parallel) and all angles 90o (opposite angles are the same)Thus all squares are parallelograms, but only some parallelograms are squares.A rhombus is a parallelogram which has all sides the same length.
What is true of rectangles that isn't true of parallelograms in general?
All rectangles have 90 degree angles and with parallelograms that does not always have to be the case. But no matter what in order for a parallelogram to be a rectangle the angles have to all be 90 degrees.Rectangles are special cases of parallelograms. They have all the properties of parallelograms, and in addition, all their internal angles are right-angles - 90° angles.
Why not all parallegrams are rectangles?
A parallelogram has opposite sides parallel; a rectangle is special case of parallelogram where all angles are 90 degrees, which is not the case for general parallelograms, where only opposite angles are equal, but not all angles
Why are all rectangles examples of parallelograms but all parallelograms are not rectangles?
To be a parallelogram, the figure needs both sets of opposite sides to be parallel. A rectangle needs to have four right angles. This means the rectangle has to be a parallelogram. However, you can have opposite sides parallel without having right angles, as long as opposite angles are equal to each other,
Which quadrilateral has opposite sides that are not parallel and have angles that are not equal?
All quadrilaterals apart from rectangles. Even parallelograms have adjacent angles that are not equal.
How do I know my parallelogram is not a rectangle?
A rectangle - has four right-angles at the corners. A Parallelogram - has no right-angles, but has opposite angles equal. Technically - a rectangle is a parallelogram, but a parallelogram can never be a rectangle. Clarification - Actually, all rectangles are parallelograms, but not all parallelograms are rectangles. The definition of a parallelogram is that of a four-sided shape where the opposite sides are parallel. There is no angle-size limitation in the definition. Squares, rectangles and rhombuses are all parallelograms.
If all rectangles are parallelograms are all squares parallelograms?
Yes. Squares are just complex rectangles, as the definition of a rectangle is that it has four right angles with opposite sides being parallel.
What is a parallelogram where all 4 sides are equal and the opposite sides are parallel?
All "parallelograms" have opposite sides that are parallel. If all four sides have an equal length and the angles are not all right angles, it is a rhombus. If there is any right angle, then they are all right angles and the parallelogram is a square.(note : it is not possible for a quadrilateral to have four equal sides without being one of these parallelograms.)
Can a parallelograms contain obtuse angles?
Yes because a parallelogram normally has 2 equal opposite obtuse angles and 2 equal opposite acute angles in which all 4 angles add up to 360 degees.
