quadrilaterals i by monica yuskaitis. copyright © 2000 by monica yuskaitis definition polygon – a...
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![Page 1: Quadrilaterals I by Monica Yuskaitis. Copyright © 2000 by Monica Yuskaitis Definition Polygon – a closed many straight- sided figure](https://reader035.vdocuments.mx/reader035/viewer/2022062217/5697c0131a28abf838cccdd0/html5/thumbnails/1.jpg)
Quadrilaterals I
by Monica Yuskaitis
![Page 2: Quadrilaterals I by Monica Yuskaitis. Copyright © 2000 by Monica Yuskaitis Definition Polygon – a closed many straight- sided figure](https://reader035.vdocuments.mx/reader035/viewer/2022062217/5697c0131a28abf838cccdd0/html5/thumbnails/2.jpg)
Copyright © 2000 by Monica Yuskaitis
Definition• Polygon – a closed many straight-
sided figure.
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Copyright © 2000 by Monica Yuskaitis
Definition• Angle – two rays that meet at a
common end point.
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Copyright © 2000 by Monica Yuskaitis
Definition• Degree – a unit of measurement of
an angle or arc, represented by the symbol º.
90º
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Copyright © 2000 by Monica Yuskaitis
Definition• Quadrilateral – a polygon with 4
angles and 4 straight sides.
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Copyright © 2000 by Monica Yuskaitis
Quadrilateral Family
parallelogramrectangle
rhombus square
trapezoid
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Copyright © 2000 by Monica Yuskaitis
PARALLELOGRAM
• Two pairs of parallel sides
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Copyright © 2000 by Monica Yuskaitis
RHOMBUS
• Parallelogram• 4 sides the same length
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Copyright © 2000 by Monica Yuskaitis
RECTANGLE
• Parallelogram• 4 right angles
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Copyright © 2000 by Monica Yuskaitis
SQUARE
• Parallelogram• 4 right angles• 4 sides the same length
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Copyright © 2000 by Monica Yuskaitis
TRAPEZOID
• One pair of parallel sides• 4 sides can all be
different lengths
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Copyright © 2000 by Monica Yuskaitis
KITE
• 2 pairs of equal sides• The equal sides are next to each other.• The 4 sides cannot all be the same length.
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Copyright © 2000 by Monica Yuskaitis
OTHER - QUADRILATERAL
• Any polygon with 4 sides that is NOT a:• Parallelogram• Trapezoid• Kite
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Copyright © 2000 by Monica Yuskaitis
Property of quadrilaterals• The sum of all the angles equals
360º degrees.
90º
90º
90º
90º
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Copyright © 2000 by Monica Yuskaitis
Property of Quadrilaterals• The sum of all the angles equals
360º degrees.
90º
90º
90º
90º
90º90º90º90º+
360º
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Copyright © 2000 by Monica Yuskaitis
Property of Quadrilaterals• The sum of all the angles equals
360º degrees.
90º
90º
90º
90º
90º90º90º90º+
360º
![Page 17: Quadrilaterals I by Monica Yuskaitis. Copyright © 2000 by Monica Yuskaitis Definition Polygon – a closed many straight- sided figure](https://reader035.vdocuments.mx/reader035/viewer/2022062217/5697c0131a28abf838cccdd0/html5/thumbnails/17.jpg)
Copyright © 2000 by Monica Yuskaitis
Property of Quadrilaterals• The sum of all the angles equals
360º degrees.
70º
110º
70º
110º
70º70º
110º110º+360º
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Copyright © 2000 by Monica Yuskaitis
Property of Quadrilaterals• The sum of all the angles equals
360º degrees.
65º
115º65º
115º
65º65º
115º115º+360º
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Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
90º
90º
90º
?
90º90º90º
?360º
+
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Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
70º
?
70º
110º
70º70º
110º?+
360º
![Page 21: Quadrilaterals I by Monica Yuskaitis. Copyright © 2000 by Monica Yuskaitis Definition Polygon – a closed many straight- sided figure](https://reader035.vdocuments.mx/reader035/viewer/2022062217/5697c0131a28abf838cccdd0/html5/thumbnails/21.jpg)
Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
65º
115º65º
?65º65º
115º?+
360º
![Page 22: Quadrilaterals I by Monica Yuskaitis. Copyright © 2000 by Monica Yuskaitis Definition Polygon – a closed many straight- sided figure](https://reader035.vdocuments.mx/reader035/viewer/2022062217/5697c0131a28abf838cccdd0/html5/thumbnails/22.jpg)
Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
90º
90º
?
90º
90º90º90º
?+360º
![Page 23: Quadrilaterals I by Monica Yuskaitis. Copyright © 2000 by Monica Yuskaitis Definition Polygon – a closed many straight- sided figure](https://reader035.vdocuments.mx/reader035/viewer/2022062217/5697c0131a28abf838cccdd0/html5/thumbnails/23.jpg)
Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
58º81º
109º?+
360º81º58º
109º?