Rhombi & Squares
Section 6-5
rhombus – a quadrilateral with 4
congruent sides
Since a rhombus is a parallelogram,
it has all the properties of a
parallelogram.
Thms. 8-15, 8-16, & 8-17
• The diagonals of a rhombus are
perpendicular.
• If the diagonals of a parallelogram
are perpendicular, then the
parallelogram is a rhombus.
• Each diagonal of a rhombus
bisects a pair of opposite angles.
rhombus
square – a quadrilateral with 4
right angles and 4 congruent sides
A square is a special type of
parallelogram that is also a
rectangle and rhombus. It has all
the characteristics of a
parallelogram, a rectangle, and a
rhombus.
square
parallelograms
rectangles
rhombi
squares
Joke Time
What is 7Q + 3Q?
You’re welcome!
Why was six afraid of seven?
Because 7 8 9. (seven ate nine)
Who invented fractions?
Henry the 1/8 th