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1 Welcome! Tear Out: Pg (These are the class notes) U3H3: Add the new dedinitions and properties for Rectangle, Rhombus, and Square to the green and yellow lists we start in class. Pg. 220 #17 (not KITE; you can do on this page) Pg. 222 #11 Updates: Unit 3 Quiz 1 will be 11/23 (next Wednesday) Unit 2 PBA will be 11/30

2 Agenda 1 Review U3H2 2 Review of Parallelograms and Trapezoids 3 Rectangles, Rhombuses, and Squares 4 Cool-Down

3 DeDinitions of Quadrilaterals Ø Everyone will receive a Green Paper. Title the top: DeMinitions of Quadrilaterals Ø Draw a line in the middle of the paper creating two rectangles. Ø Draw one line splitting one rectangle and into two halves. Draw two lines splitting the second rectangle into 3 halves.

4 DeDinitions of Quadrilaterals Ø Title one box trapezoid. What is the deminition of a trapezoid? Ø Draw a diagram! Ø In the same box, title it isosceles trapezoid. What is the deminition of an isosceles trapezoid? Ø Title a new box Parallelogram. What is the deminition of a parallelogram? Ø We will Mill in the remaining boxes later!

5 DeDinitions of Quadrilaterals Ø Everyone will receive a Yellow Paper. Title the top: Properties of Quadrilaterals Ø Draw a line in the middle of the paper creating two rectangles. Ø Draw one line splitting one rectangle and into two halves. Draw two lines splitting the second rectangle into 3 halves.

6 DeDinitions of Quadrilaterals Ø Title one box isosceles trapezoid. What are the properties of an isosceles trapezoid? Ø Draw a diagram! Ø Title a new box Parallelogram. What are the properties of a parallelogram? Ø We will Mill in the remaining boxes later!

7 DeDinitions of Quadrilaterals Ø Everyone will receive a Blue Paper. Title the top: Proving a Quadrilateral is a Ø Draw a line in the middle of the paper creating two rectangles. Ø Draw one line splitting one rectangle and into two halves. Draw two lines splitting the second rectangle into 3 halves.

8 DeDinitions of Quadrilaterals Ø Title one box parallelogram. How can we prove a quad is a parallelogram? Ø We will include a little picture for each!

9 Extra Practice with Trapezoids and Parallelograms Ø Complete #1-4 on the worksheet. Be ready to write your complete solution on the whiteboard. (8 minutes) Ø Complete #5 on the worksheet. Help others at your table! (4 minutes) Ø Complete #6 on the worksheet. Help others at your table! (4 minutes) Staple this extra practice to your parallelogram section.

10 U3A15 Rectangles, Rhombuses, and Squares I will leave one page blank for my next set of SB notes. Today s Lesson #: U3A15 Topic: Rectangles, Rhombuses, and Squares LO#3: Develop and prove properties of rectangles, rhombuses, and squares.

11 U3A15 Rectangles, Rhombuses, and Squares DeIinition of a Rectangle o A quadrilateral with four right angles.

12 U3A15 Rectangles, Rhombuses, and Squares Properties of Rectangles o If a quadrilateral is a rectangle, then Ø It is a parallelogram. Ø It s diagonals are congruent. (AC BD)

13 U3A15 Rectangles, Rhombuses, and Squares Pg. 216 Complete #6 in your groups. Provide justimications in the My Notes column. (5 minutes)

14 Whiteboards!

15 U3A15 Rectangles, Rhombuses, and Squares DeIinition of a Rhombus o A quadrilateral with four congruent sides.

16 U3A15 Rectangles, Rhombuses, and Squares Properties of Rhombuses o If a quadrilateral is a rhombus, then Ø It is a parallelogram. Ø It s diagonals are perpendicular. (AC BD) Ø Each diagonal bisects a pair of opposite angles.

17 U3A15 Rectangles, Rhombuses, and Squares Pg. 219 Complete #13 in your groups. Provide justimications in the My Notes column. (5 minutes)

18 U3A15 Rectangles, Rhombuses, and Squares DeIinition of a Square o A quadrilateral with four right angles and four congruent sides.

19 U3A15 Rectangles, Rhombuses, and Squares Properties of Squares: o If a quadrilateral is a square, then Ø It is a parallelogram. Ø It s diagonals are congruent.

20 Cool-Down Answer the following questions in your notebook independently. (5 minutes) 1) Is a parallelogram a square? 2) Is a rhombus a square? 3) What do a rectangle and trapezoid have in common?

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