1ángulo interno masculino
- Hall apparently is ignorant of spherical trigonometry where the sum of the interior angles of every triangle exceeds 180 degrees.
- At each vertex of a triangle there is a couple of angle bisectors: a bisector of the interior angle and a bisector of the exterior angle.
- You'll find that the interior angle of a regular octagon is 135 degrees.
- Most antique bow compasses have an interior angle between the cross piece and bow arm of 70 to 75 degrees.
- An exterior angle of a triangle is greater than either remote interior angle.