[list=1][*]Drag the slider and move the two coloured points to change the size of the triangle.[/*][*]Drag the line segment connecting the two coloured points to translate the triangle.[/*][*]Change the text labels in the input fields.[/*][*]Click any one side to highlight it in red.[/*][*]Make sure your triangle fits inside the rectangular frame before you export the image.[/*][/list]

gMath 互動數學教室[br][url=http://www.gmath.hk/]http://www.gmath.hk[/url]