# Which types of quadrilateral have exactly three right angles?

The types of quadrilaterals that have

- Squares

- Rectangles

- Other shapes where all angles are

The reason for this is:

So:

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Quadrilaterals that have exactly three right angles are known as right trapezoids or right kites.

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- Two rhombuses have sides with lengths of #15 #. If one rhombus has a corner with an angle of #(3pi)/8 # and the other has a corner with an angle of #(5pi)/6 #, what is the difference between the areas of the rhombuses?
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