Quadrilaterals 2. POLYGON
Polygon – a closed many
.straight-sided figure
Copyright © 2000 by Monica Yuskaitis
3. ANGLE
Angle – two rays that meet at
.a common end point
Copyright © 2000 by Monica Yuskaitis
4. DEGREE
Degree – a unit of
measurement of an angle or
arc, represented by the
.symbol º
90º
Copyright © 2000 by Monica Yuskaitis
6. Quadrilateral Family
parallelogram
trapezoid rectangle
rhombus square
Copyright © 2000 by Monica Yuskaitis
8. Property of Quadrilaterals
The sum of all the angles
.equals 360º degrees
90º
90º 90º 90º
90º
+ 90º
90º 90º 360º
Copyright © 2000 by Monica Yuskaitis
10. Property of Quadrilaterals
The sum of all the angles
.equals 360º degrees
70º
70º
70º 70º 110º
110º 110º + 110º
360º
Copyright © 2000 by Monica Yuskaitis
11. Property of Quadrilaterals
The sum of all the angles
.equals 360º degrees
65º
115º 65º 65º
115º
65º 115º + 115º
360º
Copyright © 2000 by Monica Yuskaitis
12. ? What is the missing angle
90º
90º 90º 90º
90º
90º ? + ?
360º
Copyright © 2000 by Monica Yuskaitis
13. ? What is the missing angle
70º
70º 70º 70º
110º
? 110º + ?
360º
Copyright © 2000 by Monica Yuskaitis
14. ? What is the missing angle
65º
? 65º 65º
115º
65º 115º + ?
360º
Copyright © 2000 by Monica Yuskaitis
15. ? What is the missing angle
90º
90º ? 90º
90º
90º 90º + ?
360º
Copyright © 2000 by Monica Yuskaitis
16. ? What is the missing angle
58º
109º 81º
?
109º
58º 81º + ?
360º
Copyright © 2000 by Monica Yuskaitis
17. PROPERTY OF A PARM
Opposing sides parallel
Opposing angles equal
Diagonals intersect at the midpoint
Sum of angles=360 degrees
Copyright © 2000 by Monica Yuskaitis
18. PROPERTY OF A SQUARE
All sides equal
Opposing sides parallel
All angles equal=90 degrees
Sum of angles =360 degrees
Diagonals intersect at the midpoint
Copyright © 2000 by Monica Yuskaitis
19. PROPERTY OF A RECTANGLE
Opposing sides equal and parallel
All angles =90 degrees
Diagonals intersect at the same midpoint
Sum of angles =360 degrees
Copyright © 2000 by Monica Yuskaitis
20. PROPERTY OF A TRAPEZOID
Opposing sides equal
Sum of angles=360 degrees
Diagonals intersect at the midpoint
Copyright © 2000 by Monica Yuskaitis
21. PROPERTY OF A RHOMBUS
All sides equal
Opposing sides parallel
Opposing angles equal
Diagonals intersect ant the midpoint
Copyright © 2000 by Monica Yuskaitis
22. MISTER OMAR
IS THE BEST
Copyright © 2000 by Monica Yuskaitis