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What are the quadrilaterals whose diagonals cross at right angles?
They are either kites or (if the diagonals bisect each other) rhombuses.
The shape is not rectangle but looks like one?
It would have to be either a Parallelogram or a Trapezoid, both are Quadrilaterals. The rectangle is a type of Parallelogram.
Is a rectangle a trapezoid?
a trpazoid actualy has at least 1 pair of parallel sides, a rectangle has 2 pairs os parallel sides
What is a quadrilateral with opposite sides that are parallel and congruent?
a quadrilateral isa polygon with four sides and four vertices. Sometimes the word quadrangle is used. The interior angles add up to 360 degrees. Quadrilaterals are either simple (not self- intersecting) or complex (self-intersecting). Quadrilaterals and polygons in general, are broadly divided into two groups: convex and concave polygon.
Which quadrilateral always have a 90-degree angles?
The only quadrilaterals that always have all four right angles are the square and the rectangle. All four angles in a quadrilateral must add up to 360 degrees.It is possible to have non-regular quadrilaterals with one or two right angles. A quadrilateral with three right angles becomes either a square or a rectangle, because its fourth angle must also be a right angle.
