I don't know if you'd say they "have to", but they always do.
The interior angles do, and so do the exterior angles.
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All 4 sided quadrilaterals have 4 interior angles that add up to 360 degrees
360
Every one of them.
The sum is equal to 360 degrees.
360, since all quadrilaterals' interior angles add up to 360.
All 4 sided quadrilaterals have 4 interior angles that add up to 360 degrees
360
Every one of them.
The sum is equal to 360 degrees.
360, since all quadrilaterals' interior angles add up to 360.
A quadrilateral is the only polygon whose interior angles add up to 360 degrees.
The interior angles of all quadrilaterals add up to 360 degrees.
They all add up to 360
Not always but all 4 sided quadrilaterals have 4 interior angles that add up to 360 degrees
All quadrilaterals have four sides and four vertices. Additionally, the sum of the interior angles of any quadrilateral always adds up to 360 degrees. Quadrilaterals also have two diagonals connecting opposite vertices.
All quadrilaterals have 4 interior angles that add up to 360 degrees.
The 4 interior angles of 4 sided quadrilaterals add up to 360 degrees The exterior angles of any polygon add up to 360 degrees