1. 6-4/6-5: Rhombuses,
Rectangles & Squares

2. Rhombuses Definition – a quadrilateral with 4 congruent sides
Theorem – the diagonals of a rhombus are perpendicular
Theorem – each diagonal of a rhombus bisects a pair of opposite angles

3. Rectangles Definition – a quadrilateral with 4 right angles
Theorem – the diagonals of a rectangle are congruent

4. Squares
Definition – a quadrilateral with 4 right angles and 4 congruent sides

5. EX 1: Classify parallelograms ABCD & EFGH as rectangles, rhombuses, or squares. Explain.

6. EX 2: What are the measures of the numbered angles in rhombuses ABCD and PQRS? Justify your answer.

7. EX 3: If LN = 4x – 17 & MO = 2x + 13, how long are the diagonals of rectangle LMNO?
What type of triangle is PMN? Explain.

8. 6-4 Classwork from the Workbook
Standard
Honors
Pg 261 #1 – 3, 6
Pg 262 #1 – 6
Pg 261 #1 – 3, 7
Pg 262 ALL

9. EX 4: What is the most precise name for this parallelogram?
A) B)
Rhombus – a diagonal bisects the opposite angles
Square – diagonals are congruent (rectangle) and are ┴ (rhombus)

10. Real World Application!
vertices?

11. Proofs Complete proofs on pages 258, 259, 263, and 264
Use distance formula, slope formula, and/or midpoint formula for the last two proofs

12. 6-5 Classwork from the Workbook
Standard
Honors
Pg 265 #3, 4
Pg 267 #6, 7
Pg 265 #3, 4
Pg 267 #2, 4, 6, 7

13. Honors: 6-4/6-5 Assignments
Primary Assignment: join.quizizz.com
Codes:
Period 1:
Period 5:
Period 6:
Secondary Assignment:
Textbook pg 424 – 425 #1, 6, 7, 10 – 12, 18, 21,
Textbook pg 434 #4, 5

14. Standard: 6-4/6-5 Assignments
Primary Assignment: join.quizizz.com
Codes:
Period 2:
Period 4:
Period 7:
Secondary Assignment:
Textbook pg 424 – 425 #1, 6, 7, 10 – 12, 18, 21,
Textbook pg 434 #4, 5