This Maths article explores shapes with 3 sides, looking at curved and straight lines. ... A triangle has 3 sides and 3 vertices (corners). A vertex is where two lines meet or join.

Shape C is a triangle. It has 3 sides and 3 corners, so it is the odd one out. Back to top. Example 2. Now look at these shapes. Which shape is the odd one out? Show answer Hide answer ...