225 A trangle geometric shape

224 Point E and F are movable on side AB

223 A right triangle [3,4,5] with altitude and two dynamic points on the hypotenuse

222 A right triangle [3,4,5] with two dynamic points on the hypotenuse foming an isosceles triangle

221 A right triangle [3,4,5] with two dynamic points on the hypotenuse with one perpendicular point

220 A right triangle [3,4,5] with two dynamic points on the hypotenuse

219 Right triangle [13,12,5] with parallel CD - answer 2

218 Right triangle [13,12,5] with parallel CD - answer 1

217 Triangle [13,12,5] with parallel CD

216 A plot of function f(x)=tan(x) and f(x) =x

215 A trangle geometric shape

214 Trangles for geometric derivation of the cosine sum identity