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false
Sometimes but not always depending on what type the 4 sided quadrilateral is.
square
Diagonally opposite pairs of angles will always be equal, but the only time all angles in a quadrilateral parallelogram are equal is when that shape is a rectangle.
No? Wouldn't they then be supplementary? Opposite rays make a straight angle/line, and if the exterior sides made the straight angle, the adjacent angles would be supplementary. ...Right?
No, they are supplementary.
False :]
false
opposite angles are supplementary
false
Sometimes but not always depending on what type the 4 sided quadrilateral is.
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.
always
a circumscribed triangle is a circumscribed triangle and will always be
A square, always, a rhombus, always, a parallelogram, always, and rectangles, always.
Not normally but quite possible in the form of an isosceles trapezoid.
Allied (or co-interior) angles are supplementary. Vertically opposite angles are always equal.