Q: Does a trapeziums angles cross at rightangles?

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No a quadrilateral does not have any rightangles.

Usually none but it's quite possible for it to have two.

Sum of interior angles = (2n -4) rightangles So we have 2x14 - 4 = 24 right angles = 6 x 360 = 2160 degrees

720 degrees * * * * * The internal angles of any quadrilateral add to 360 degrees.

There are 3 different types: ordinary, isosceles and right which has 2 right angles

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No a quadrilateral does not have any rightangles.

Usually none but it's quite possible for it to have two.

Sum of interior angles = (2n -4) rightangles So we have 2x14 - 4 = 24 right angles = 6 x 360 = 2160 degrees

720 degrees * * * * * The internal angles of any quadrilateral add to 360 degrees.

There are 3 different types: ordinary, isosceles and right which has 2 right angles

A cross has 4 angles

yes they do yes yes, right angles define squares. if they didn't have rightangles they would be a different shape, such as a triangle. how on earth would you need to ask the internet that question? seriously.

No.

Angles that cross are called perpendicular angles.

A parallelogram has two pairs of equal angles, but each pair may be at a different angle. A rectangle has two pairs of equal angles that are also equal to each other.

The diagonals of a rectangle do not cross at right angles

The diagonals of a square and a rhombus cross at right angles.