Illustration that shows two mutually equiangular triangles are similar.
Illustration that shows that two triangles which have their sides respectively parallel, or respectively…
Illustration that shows two similar triangles with altitudes drawn.
Right triangle inscribed in semicircle. Illustration shows that the perpendicular from any point in…
Illustration of triangle ABC with altitude a and base b to be used to demonstrate that the area is 1/2ba.