Minimalist Icons - designing within constraints

Designing within constraints is rewarding and frustrating. I set out to create four icons for my site using only a triangle and a circle. For product I drew inspiration from the mathematical definition of product - "the set of elements that two or more sets have in common". For interface I imagining a downward motion, or touch. For logo I saw a snowcapped mountain with a sun behind it. For contact a sideways motion, perhaps an object passing through a portal.