Euclidean geometry equal (SAS), or two angles and a side equal (ASA) (Book I, propositions 4, 8, and 26). Triangles with three equal angles (AAA) are similar, but not necessarily congruent. Also, triangles with two equal sides and an adjacent angle are not necessarily equal or congruent. The sum of the angles of a triangle is equal to a straight angle (180 degrees). This causes an equilateral triangle to have three interior angles of 60 degrees. Also, it causes every triangle to have at least two acute angles and up to one obtuse or right angle. The celebrated Pythagorean theorem (book I,
What If... (web series) around characters from two of the three series meeting each other and interacting in a shared alternate reality, not in continuity with any of the series. Each episode features two cast members from either "General Hospital", "All My Children", or "One Life to Live". The following is a list of featured cast members. What If... (web series) What If... is an American web series that acts as a crossover among three ABC soap operas, "General Hospital", "All My Children" and "One Life to Live". The ten-part series was originally streamed on ABC.com from July 12 to August 30, 2010. It