A shape with three sides is called a triangle.
A triangle has 3 sides
A shape with three sides is called a triangle. A shape with ten sides is called a decagon.
A shape with straight sides is called a polygon. But it can have 3 or 4 sides as well.
A shape with 3 sides is called a triangle. A triangle is a polygon and polygons have 3 or more sides.
a face
An equilateral triangle
A shape with four sides is called a quadrilateral.
A shape with 12 sides is called a dodecagon.
A scalene triangle.
A polygon.
A triangle has three sides, so a hexagon (a shape with six sides) would have three more sides than a triangle.