The sum of its interior angles ( two acute and two reflex ), as with any crossed quadrilateral, is 720?
22.
Finally, tweak the interior angle at the vertex of the two shortest sides so it is slightly greater than 180?
23.
Equivalently, a convex quadrilateral is cyclic if and only if each exterior angle is equal to the opposite interior angle.
24.
This contradicts Proposition 16 which states that an exterior angle of a triangle is always greater than the opposite interior angles.
25.
Take this theorem as an example, we can use interior angle of parallel line to show that the base angles are equal.
26.
Geometry 101 says that two triangles with the same interior angles are SIMILAR and the ratio of their sides is the same.
27.
Euclid's Proposition 27 states that if a transversal intersects two lines so that alternate interior angles are congruent, then the lines are parallel.
28.
The other interior angle ( at the North Pole ) can be made larger than 90? further emphasizing the failure of this statement.
29.
Fluckite's mineral crystallography is triclinic meaning it has three axis of different length and three different interior angles that do not equal 90?
30.
The fifth intersects the exterior part of the band and extends to the interior angle and the sixth is in the submarginal disc.
