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1. Rhombi & Squares Section 8-5
2. rhombus – a quadrilateral with 4 congruent sides
Since a rhombus is a parallelogram, it has all the properties of a parallelogram.
3. 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.
5. 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.
7.
parallelograms
rectangles rhombi
squares
8. Joke Time What is 7Q + 3Q?
You’re welcome!
9. Why was six afraid of seven?
Because 7 8 9. (seven ate nine)
10. Who invented fractions?
Henry the 1/8 th