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How many right angles are in a parallelogram?
There are no right angles in a parallelogram. A parallelogram only has right angles if it is a rectangle, in which case it has exactly four.
Are the adjacent sides on a parallelogram perpendicular?
Generally no. If they are perpendicular, all four angles are right angles and the parallelogram is usually called a rectangle.
Definition of a quadrilateral that is not a parallelogram and could have exactly two opposite right angles?
A rectangle is a parallelogram, and neither a trapezoid nor an isosceles trapezoid could have exactly two opposite right angles.So, a quadrilateral that is not a parallelogram and could have exactly two opposite right angles must be a kite.
Is a rhombus a parallelogram with 4 right angles?
a rhombus is a parallelogram with no right angles.
Do all squares have two parallel sides?
All squares have TWO SETS of opposite, parallel sides. A square is a parallelogram with 4 equal sides and 4 equal angles (right angles) of which adjacent sides are perpendicular. The related parallelogram, the rhombus, or "diamond" shape, also has 4 equal sides, but no right angles, where opposite angles are equal and adjacent angles are supplementary (sum to 180 degrees).
