No, only in certain, limited circumstances. Eg where a quadrilateral is (can be) circumscribed within a circle.
False. Supplementary angles add to 180degrees.
True
-- Opposite sides are parallel. -- Opposite sides are equal. -- All four sides are equal. -- Adjacent sides are equal. -- Adjacent angles are supplementary. -- Opposite angles are equal. -- Diagonals are perpendicular. -- Interior angles sum to two straight angles. -- Exterior angles sum to two straight angles.
If the lines are perpindicular then each pair of vertical angles are supplementary
True
No only if its in the form of an isosceles trapezoid then its base angles will be the same but opposite angles are normally different.
Neither of those descriptions is true of a trapezoid.
opposite angles are supplementary
false
false
Yes. This is true because opposite angles are congruent and adjacent angles are supplementary.
No, only in certain, limited circumstances. Eg where a quadrilateral is (can be) circumscribed within a circle.
A trapezoid (UK trapezium) has D)one set of opposite sides parallel although they are of unequal length. An isosceles trapezoid has two sets of equal angles, at the ends of each of the parallel sides.
No. Any angles which add up to 180 degrees are supplementary.
False. Supplementary angles add to 180degrees.
True and its base angles are congruent.