Quadrilaterals I by Monica Yuskaitis. Student Expectation: 6 th Grade: 6.3.6B Identify relationships involving angles in triangles and quadrilaterals.
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Quadrilaterals I
by Monica Yuskaitis
Student Expectation:
6th Grade:
6.3.6B Identify relationships involving angles in triangles and quadrilaterals.
7th Grade:• 7.3.6B Use properties to classify triangles and
quadrilaterals.
Copyright © 2000 by Monica Yuskaitis
Copyright © 2000 by Monica Yuskaitis
Definition• Polygon – a closed many straight-
sided figure.
Copyright © 2000 by Monica Yuskaitis
Definition• Angle – two rays that meet at a
common end point.
Copyright © 2000 by Monica Yuskaitis
Definition• Degree – a unit of measurement of
an angle or arc, represented by the symbol º.
90º
Copyright © 2000 by Monica Yuskaitis
Definition• Quadrilateral – a polygon with 4
angles and 4 straight sides.
Copyright © 2000 by Monica Yuskaitis
Quadrilateral Family
parallelogramrectangle
rhombus square
trapezoid
Copyright © 2000 by Monica Yuskaitis
Property of quadrilaterals• The sum of all the angles equals
360º degrees.
90º
90º
90º
90º
Copyright © 2000 by Monica Yuskaitis
Property of Quadrilaterals• The sum of all the angles equals
360º degrees.
90º
90º
90º
90º
90º90º90º90º+
360º
Copyright © 2000 by Monica Yuskaitis
Property of Quadrilaterals• The sum of all the angles equals
360º degrees.
90º
90º
90º
90º
90º90º90º90º+
360º
Copyright © 2000 by Monica Yuskaitis
Property of Quadrilaterals• The sum of all the angles equals
360º degrees.
70º
110º
70º
110º
70º70º
110º110º+360º
Copyright © 2000 by Monica Yuskaitis
Property of Quadrilaterals• The sum of all the angles equals
360º degrees.
65º
115º65º
115º
65º65º
115º115º+360º
Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
90º
90º
90º
?
90º90º90º
?360º
+
Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
70º
?
70º
110º
70º70º
110º?+
360º
Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
65º
115º65º
?65º65º
115º?+
360º
Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
90º
90º
?
90º
90º90º90º
?+360º
Copyright © 2000 by Monica Yuskaitis
What is the missing angle?
58º81º
109º?+
360º81º58º
109º?
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