geometry/notes 8.4
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RectanglesSECTION 8.4
What are the properties of a rectangle?How do I tell if a parallelogram is a rectangle?
RECTANGLES
Rectangle: A quadrilateral with 4 right angles.
How does this compare to a parallelogram?
RECTANGLE
1. Opposite Sides are and 2. Opposite s are 3. Consecutive s are supplementary4. Diagonals are and diagonals bisect each other5. All four s are right6. If a parallelogram is a rectangle, then the diagonals
are
PROPERTIES
Quadrilateral RSTU is a rectangle. RT = 6x + 4SU = 7x - 4Find x
EXAMPLE
Quadrilateral EFGH is a rectangleFH = 5x + 4GE = 7x – 6Find x
EXAMPLE
Quadrilateral LMNP is a rectangleFind x and y
EXAMPLE
Quadrilateral EFGH is a rectangleFind x and y
EXAMPLE
Given points A(-2, 1), B(4, 3), C(5, 0) and D(-1, -2)Prove that ABCD a rectangle using the slope
formula.
EXAMPLE
Given points W(-2, 1), X(-1, 3), Y(3, 1), and Z(2, -1).Is this a rectangle?
EXAMPLE
Page 428 10 – 14 (Evens) 16 – 24 (all) 26, 28, and 36
HOMEWORK
LESSON PLAN
Intro Special parallelogram called a rectangle
Standards- 8.4Supplies – slides, whiteboard, handouts,Timing - 1 day 1 review day and a quizEssential Questions- slide 2 Input – slides 3 - 4Guided Practice – slides 5 - 10 Independent Practice – bookwork
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