Q: Which condition is sufficient to show that a quadrilateral is a trapezoid?

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To prove that a quadrilateral is a right trapezoid, you need to show that it has one pair of parallel sides and one pair of right angles. This can be done by using the properties of parallel lines and perpendicular lines.

It makes sense because it is true. There are other quadrilaterals whose diagonals are perpendicular.

a square, rectangle, rhombus.....

____________ / | /_____________ | Crappy drawing, I know, but a right trapezoid has two right angles(right side of picture), and two supplimentary non-right angles(left side of drawing). This is still a trapezoid because in order to be a trapezoid, there must be one and only one pair of parallel lines, and four sides. That's it, thus this is a possible trapezoid.

It's sides angles and shape or form

Related questions

To prove that a quadrilateral is a right trapezoid, you need to show that it has one pair of parallel sides and one pair of right angles. This can be done by using the properties of parallel lines and perpendicular lines.

It makes sense because it is true. There are other quadrilaterals whose diagonals are perpendicular.

I don't think this is possible. there is not a quadrilateral with these qualities. If it is a quadrilateral, it will automatically have parallel lines, but there is not one that has both. The closest one would be the trapezoid, with a set of parallel lines, but no right angle. The square and rectangle have two sets of parallel lines and 4 right angles.

false

A square

just have 4 lines that join up... a quadrilateral is a 4 sided shape

polygon and rectangle

It is a quadrilateral based pyramid.

See the related links for pictures of trapezoids.

a dustbin like= ______________ \ / \ / \ / \ / '''''''''''''

a square, rectangle, rhombus.....

____________ / | /_____________ | Crappy drawing, I know, but a right trapezoid has two right angles(right side of picture), and two supplimentary non-right angles(left side of drawing). This is still a trapezoid because in order to be a trapezoid, there must be one and only one pair of parallel lines, and four sides. That's it, thus this is a possible trapezoid.