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Because there are 180 degrees in a triangle and a 4 sided quadrilateral is made from two triangles so therefore 2*180 = 360 degrees

Q: Why do angles in a quadrilateral triangle add up to 360?

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It has 4 and they add up to 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.

They sides if a quadrilateral can add up to anything but the angles have to equal 360

360. Any quadrilateral's angles add up to 360.

180 degrees because the 4 interior angles of a quadrilateral add up to 360 degrees and the 3 interior angles of a triangle add up to 180 degrees

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No, the angles in a quadrilateral add up to 360 degrees. The angles in a triangle add up to 180 degrees.

It has 4 and they add up to 360 degrees

Their exterior angles add up to 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.

They sides if a quadrilateral can add up to anything but the angles have to equal 360

If you cut any quadrilateral along one of its diagonals, the figures formed are two triangles. Since the sum of the angles of a triangle is 180 degrees, then the sum of the angles of two triangles is 2(180) = 360 degrees. For this reason, the sum of the angles of a quadrilateral is 360 degrees.

All the interior angles of a quadrilateral add to 360 degrees, yes.

360. Any quadrilateral's angles add up to 360.

The four angles of a quadrilateral add up to 360 degrees.

The interior angles of a quadrilateral add up to 360 degrees.

180 degrees because the 4 interior angles of a quadrilateral add up to 360 degrees and the 3 interior angles of a triangle add up to 180 degrees

360