True
itβs true
True
false
Yes. This is true because opposite angles are congruent and adjacent angles are supplementary.
False, the sum of the angles in a parallelogram is 360 degrees.
Rectangles have all right angles. Parallelogram is spelled with an "o".
True
True
Yes.
True
Generally false. In a parallelogram, the opposite angles are equal. They could be complementary in a highly skewed parallelogram in which one angle is 45 degrees.
It is true only when the parallelogram is in the form of a rhombus, and thus the two diagonals are perpendicular to each other.
itβs true
For the quadrilateral to be a parallelogram, both pairs of opposite angles must be congruent.
True
Yes, that's true for any parallelogram.