Depends what sort of quadrilateral. For a square and rectangle, it's 90 all the way, but with all others, it varies.
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The 4 interior angles of any quadrilateral always add up to 360 degrees
There are four angles in a trapezoid since a trapezoid is a quadrilateral. A quadrilateral has four sides and four angles.
No, a quadrilateral couldn't have four obtuse angles because the four interior angles of a four-sided quadrilateral add up to 360 degrees, and the sum of the measures of four obtuse angles would be greater than 360 degrees.
No. The interior angles of a TRIANGLE add up to 180 degrees.For a quadrilateral, there are four interior angles, and they add up to 360 degrees.
The four interior angles of any quadrilateral add up to 360 degrees