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A parallelogram is any polygon in which opposite sides are parallel?
B. False
Is every rectangle is a parallelogram?
No. A rectangle is a parallelogram because all of its sides are parallel, but a parallelogram is not a rectangle because it does not have all right angles. It is a true statement to say that all rectangles are parallelograms. However, the statement that all parallelograms are rectangles is false. A parallelogram is a shape where its opposite sides are parallel to each other, including squares, hexagons, octagons, etc.
A rhombus is a square true or false?
False. Every rhombus is a parallelogram, but not every rhombus is a square. Only those that have right angles are squares. Every rhombus is a parallelogram because its diagonal lines are perpendicular, and they bisect an interior angle.
The only way to circumscribe a circle around a parallelogram is to make the parallelogram a rectangle true or false?
True.
Why is this conjecture false 'If two angles are supplementary then one of the angles must be obtuse'?
they could both be right angles
True or False- If opposite angles of a quadrilateral are supplementary then the quadrilateral is a parallelogram?
false
If both pairs of opposite angles of a quadrilateral are congruent then the quadrilateral is not a parallelogram?
False. If both pairs of opposite angles of a quadrilateral are congruent then the quadrilateral is a parallelogram.
The opposite angles of a quadrilateral in a circumscribed circle are always complementary?
false
If opposite angles of a quadrilateral are supplementary is the quadrilateral a parallelogram?
No. A quadrilateral is a parallelogram when consecutiveangles are supplementary.
True or false If opposite angles of a quadrilateral are supplementary then the quadrilateral is a parallelogram?
True
Is this statement true or falseIf a quadrilateral is a parallelogram, then its opposite angles are always supplementary?
false
If a quadrilateral is a parallelogram then its opposite angles are always supplementary?
False because it will have 2 equal opposite obtuse angles and 2 equal opposite acute angles with the 4 angles adding up to 360 degrees.
If one pair of opposite angles of a quadrilateral is congruent then the quadrilateral is a parallelogram?
false; if both pairs
The sum of the angles of a parallelogram is 180 true or false?
False, the sum of the angles in a parallelogram is 360 degrees.
Is this statement true or falseIf one pair of opposite angles of a quadrilateral is congruent, then the quadrilateral is a parallelogram?
false
Is it true or false that complementary angles have a sum of 90 percent?
False because complementary angles have a sum of 90 degrees.
Can both angles in a pair of complementary angles can be obtuse true or false?
yes
