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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.
In a parallelogram are all angles right?
A parallelogram is a quadrilateral (four-sided polygon) with two pairs of parallel sides. By definition, a parallelogram does not need to have all right angles. Think of rhombuses, which do not have any right angles, yet are parallelograms. Therefore, the answer is no.
What is the counterexample for all parallelograms are rectangles?
any parallelogram that does not have right angles.
Opposite angles of all parallelograms are always?
opposite angles of all parallelograms are always equal.
Are all parallelograms rectangles?
No. All parallelograms are not rectangles. However, all rectangles are parallelograms. A parallelogram is a four sided figure with its opposite sides parallel to each other. A rectangle is a parallelogram whose four angles are all 90'. A square is a type of rectangle that has all four sides the same length.
