Vocabulary
A closed shape made with at least three straight lines.
polygon
This is shape has 4 equal sides but is not a square.
rhombus
an angle that is more than 90 degrees but less than 180 degrees
obtuse angle
What does a square need that a rectangle does not need?
4 equal sides
any shape that has four sides
quadrilaterals
What does a rectangle have that a rhombus does not have?
4 right angles