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8-4: Rectangles
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Definition-a quadrilateral with four right angles. Properties
Has all properties of a parallelogram. All angles are congruent (90 degrees). Diagonals are congruent and bisect each other.
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If AC=6x+14 and BD=9x+5, find the length of each diagonal.
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If ABCD is a rectangle, find x and y.
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To show a quadrilateral is a rectangle:
Show all angles are right angles. Show that diagonals are congruent.
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Is FGHJ a rectangle if F(-4,-1), G(-2,-5), H(4,-2), and J(2,2)?
Show all angles are right angles. Show diagonals are congruent.
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Assignment: WB 8-4
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