Create a mountain with Fireworks

With the pen tool create a triangle shape


















Give to the shape the following characteristics

Fill category -> Gradient -> Linear
Color -> i use #FF9900 and fading to white (#FFFFFF), you can use any color


















After, with the pen tool create a shape like the below (with black color)


















Now give to the new shape:
color -> #FF6600

and select the two shapes and clone them (edit -> clone) and resize (modify -> transform -> numeric transform... -> scale = 60%). Now place them behind the original shapes.