201 A functiongraph of y=x when x is greater than 0 and y=-x when x is less than 0

200 A functiongraph of y=x and y=-x when x is greater than 0

199 A plot of y = x and y = -x

198 A plot of y = -x

197 A plot of y = x

196 A cross section of two spheres intersecting each other

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

194 The relationship between internal angles of a tringle and its external angle

193 A plot of the function f(x)=1-cos(x)

192 A trangle geometric shape

191 A trangle with a line parallel to one side and intersecting with two others

190 Stella's driving trajectory