Question

Name the characteristics a shape has to have to be defined as the following:

Quadrilateral_________________________
Triangle_____________________________
Square______________________________

Answer 1

Quadrilateral:Four sides,four vertices.
Triangle:3 sides,3 vertices.
and a square is a type of quadrilateral whith all the sides having the same lengths.

Answer 2

quadrilateral: 4 sides
Triangle: 3 sides
square: 4 congruent sides and 4 90 degree angles