To find what can be added to 51 to equal 180, you would subtract 51 from 180. This would give you 129. Therefore, 129 can be added to 51 to equal 180.
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yes quadrilaterals equal 360, triangles equal 180. and shapes with five sides is 540. every time a new side is added add 180
No because the three interior angles of any triangle always add up to 180 degrees.
If all of the interior angles of the polygon add up to 180 degrees, then the polygon is a triangle.
Set the equation equal to 0: 7h - 2 - 51 = 0 add -2 and -51 to both sides: 7h = 53 Divide h = 53/7
A supplementary angle is 180 degrees. So, it depends how many supplementary angles you add together.