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,
Yod (astrology) with the Sun at 20° Cancer, Uranus at 8° Taurus and Jupiter at 14° Sagittarius. Yod (astrology) Yod is an astrological aspect pattern that involves any three planets or points in the horoscope that form an isosceles triangle. This phenomenon occurs when two planets are sextile (60° aspect) to each other, and both are then quincunx (150° aspect) to a third. The Yod is formed when the two planets make a sextile aspect and the third planet is opposite their mid-point. That third planet must make angles of 150 degrees with the other two. If you drew lines on the