Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

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Quadrilaterals I

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Transcript of Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Page 1: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Quadrilaterals I

Page 2: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Definition• Polygon – a closed many straight-

sided figure.

Page 3: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Definition• Angle – two rays that meet at a

common end point.

Page 4: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Definition• Degree – a unit of measurement of

an angle or arc, represented by the symbol º.

90º

Page 5: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Definition• Quadrilateral – a polygon with 4

angles and 4 straight sides.

Page 6: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Quadrilateral Family

parallelogramrectangle

rhombus square

trapezoid

Page 7: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Property of quadrilaterals• The sum of all the angles equals

360º degrees.

90º

90º

90º

90º

Page 8: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Property of Quadrilaterals• The sum of all the angles equals

360º degrees.

90º

90º

90º

90º

90º90º90º90º+360º

Page 9: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Property of Quadrilaterals• The sum of all the angles equals

360º degrees.

90º

90º

90º

90º

90º90º90º90º+360º

Page 10: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Property of Quadrilaterals• The sum of all the angles equals

360º degrees.

70º

110º

70º

110º

70º70º110º110º+360º

Page 11: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

Property of Quadrilaterals• The sum of all the angles equals

360º degrees.

65º

115º65º

115º

65º65º115º115º+360º

Page 12: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

What is the missing angle?

90º

90º

90º

?

90º90º90º?

360º+

Page 13: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

What is the missing angle?

70º

?

70º

110º

70º70º110º?+

360º

Page 14: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

What is the missing angle?

65º

115º65º

?65º65º115º?+

360º

Page 15: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

What is the missing angle?

90º

90º

?

90º

90º90º90º?+

360º

Page 16: Quadrilaterals I. Definition Polygon – a closed many straight- sided figure.

What is the missing angle?

58º81º109º?+

360º81º58º

109º?


What am I?. I am a four sided polygon I am a four sided polygon I can be convex or concave I can be convex or concave What am I? What am I?

What am I?. I am a four sided polygon I am a four sided polygon I can be convex or concave I can be convex or concave What am I? What am I?

Quadrilateral Four sided polygon.

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by Carol Edelstein Polygon – a closed, straight- sided, plane figure.

by Carol Edelstein Polygon – a closed, straight- sided, plane figure.

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