Triangles

We encounter similar difficulties when we substitute rectangles for triangles in this configuration.

Having chosen two points on a line, we can then choose any point on a parallel line to form a triangle; and all such triangles will have the same area.

Triangles don't have four angles.

Plato thought that the universe was made up of triangles.

I like triangles.

If triangles had a god, he would have three sides.

Trigonometry studies relationships involving lengths and angles of triangles.

Trigonometry is a branch of mathematics that studies triangles.

The ball is covered with 2,688 Waterford crystal triangles which are illuminated from within by more than 2,000 LED lights.

Scalene triangles are ugly.