The triangle is called a special right triangle as the angles of this triangle are in a unique ratio of 123 Here, a right triangle means being any triangle that contains a 90° angle A triangle is a special right triangle that always has angles of measure 30°, 60°, and 90° Tips for Remembering the Rules Remembering the triangle rules is a matter of remembering the ratio of 1 √3 2, and knowing that the shortest side length is always opposite the shortest angle (30°) and the longest side length isThe sides of a right triangle lie in the ratio 1√32 The side lengths and angle measurements of a right triangle Credit Public Domain We can see why these relations should hold by plugging in the above values into the Pythagorean theorem a2 b2 = c2 a2 ( a √3) 2 = (2 a) 2 a2 3 a2 = 4 a2
30 60 90 Triangle Sides Examples Angles Full Lesson
