The sum of any triacontagon's interior angles is 5040 degrees.
The sum of any tetracontagon's interior angles is 6840 degrees.
One interior angle in a regular triacontagon is 168, meaning that one exterior angle would be 12.
Electrodes were constructed from silicon wafers to have three different sharpnesses (interior angle of 5 for sharp, 90 for medium, 150 for blunt).
This implies that there are interior angles on the same side of the transversal which are less than two right angles, contradicting the fifth postulate.
By the alternate interior angle theorem, "l" is parallel to "n".
This causes an equilateral triangle to have 3 interior angles of 60 degrees.
For instance, consider the following: "a square": a quadrilateral that has interior angles which are all right angles, and that has bounding sides which all have the same length.
