Day 10 Special Parallelograms notebook.notebook
December 05, 2016
Parking Lot HW ?
parallelogram puzzle
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Day 10 Special Parallelograms notebook.notebook
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Can you prove it is a Parallelogram?
Opener:
Is the given enough to prove a parallelogram?
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Day 10 Special Parallelograms notebook.notebook
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Agenda:12­5­16
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hw ?
quiz feedback
Special Parallelograms L6­4 & L6­5
Intro Unit Project HW: Unit Test review & mathxl
Unit 3 Test: Friday, December 9th
Unit Project due Dec. 13th
Final: Thursday, Dec. 15th 3
Day 10 Special Parallelograms notebook.notebook
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Homework
?
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show work
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Quiz Feedback
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L6­4 & 6­5 Properties & Conditions of Rhombi, Rectangles & Squares
How do you use properties of rhombi, rectangles, and squares to solve problems
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Day 10 Special Parallelograms notebook.notebook
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Special Parallelograms
http://tube.geogebra.org/material/simple/id/1801473
Definition of a • rhombus
• rectangle
• square
• trapezoid
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Day 10 Special Parallelograms notebook.notebook
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A square is both a....
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With the paper I give you:
Fold your paper in half. Fold it in half again the other direction. Cut through the folds diagonally corner to corner. Unfold.
1.
What quadrilateral did you make? Why?
2.
Compare the angles formed by the diagonals with your group members. What properties seem to exist?
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Properties of Rhombus: 13
Day 10 Special Parallelograms notebook.notebook
given: RHOM is a rhombus
prove: diagonals are perpendicular
December 05, 2016
what does this mean? O
H
M
R
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Find the measure of the numbered angles on the rhombus
50o
110o
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1
1
2
4
3
2
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When will I ever use this?
WWBVD? (what would Bob Vila do?)
https://www.youtube.com/watch?v=NGXvnt6yFZw
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Special Properties of Rectangles
diagonals of a rectangle
http://tube.geogebra.org/material/simple/id/21099
1. How are they the same as the diagonals of a parallelogram?
2. How are they more special than the diagonals of a parallelogram?
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R
GIVEN: RECT is a rectangle
PROVE: the diagonals are congruent
E
HINT: prove 2 right triangles are congruent
T
C
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MIRA is a rectangle. If MR = 7x2­10 and IA = 6x2­3x, solve for x and find the length of each diagonal. TOPA is a rectangle. If TP = x2 +10x and OA = 71, solve for x and find the length of each diagonal. 19
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Square Definition: Properties of a square:
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Rhombus? Square? Rectangle?
Why?
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