The 15-75-90 Triangle As the 30-60-90 triangle is based on an equilateral triangle, the 45-45-90 triangle is based on a square, the 18-72-90 and 36-54-90 triangles are based on the regular pentagon (see  and the 22.5-67…

robertlovespi.net/2013/10/18/t... The 15-75-90 #triangle is based on the properties of a regular #decagon. #math #mathematics #geometry #righttriangle

The 22.5-67.5-90 Triangle In the diagram above, a regular octagon is shown nested inside square LMNP. The central angles of this octagon, such as angle HAF, each measure 360/8 = 45 degrees. Segments HA and FA are radii, and…

Here's another extra-special right #triangle. This one is based on the properties of a regular #octagon. robertlovespi.net/2013/10/18/t... #blog #mathematics #geometry #righttriangle

A visualization of why a²+b²=c²
#nerd #math #Pythagoras #Polynomial #Trigonometry #Trig #RightTriangle

Right Triangles with integer sides & integer hypotenuses.
#righttriangle #hypotenuse #math #numbers #nerd