Yes, a trapezoid is a quadrangle because a quadrangle has four sides and a trapezoid has four sides.
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rhombus, square, rectangle, kite, parallelogram, etc.
maybe a trapezoid?
A close figure is a figure with no open spaces in it and is completely closed. Examples are: quadrilateral square rhombus parallelogram quadrangle rhomboid rectangle oblong kite trapezium trapezoid
give me incircle radius of a quadrangle
A quadrangle is an open space with buildings on 4 sides.A quadrilateral is a four-sided shape. A quadrilateral that is not a parallelogram (two sets of parallel sides) may be a trapezoid or a trapezium (US terms). To draw a trapezium (irregular quadrilateral), draw two parallel lines and connect them with unequal lines at non-congruent angles. If you make the angles opposite and congruent, you have drawn a trapezoid, which looks like a small stepstool with a top smaller than the base.