The four angles inside a quadrilateral add up to 360 degrees. The sides are measured in units of length ... like inches, meters, or miles ... not in degrees.
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Both sides add up to 1 degrees to 359 degrees.
180 degrees
180 degrees
It has 8 equal sides It has 8 interior angles that add up to 1080 degrees It has 8 exterior angles that add up to 360 degrees It can have 8 equal sides or 8 sides that are not all equal
720 degrees.