Learn why the Pythagorean theorem only works for right triangles and what methods apply to other triangle types.
Learn why both legs in a 45-45-90 triangle are equal, and how this property defines the isosceles right triangle.
Learn why the sine rule applies to all triangles, not just right triangles, and how to use it for finding unknown sides and angles.
Learn why the Side-Side-Angle condition does not reliably determine a triangle and its implications in geometry.
Learn about triangle angles, their properties, and how to determine unknown angles using trigonometry.
Discover the rule of angles in a triangle and learn how it applies to different triangle types.
Learn to find the missing angles of a right triangle easily using simple arithmetic.
Learn how to recognize a 45-45-90 triangle and understand its unique properties.