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Special  Quadrilaterals
Quadrilateral Four sided polygon
Foldable 1. Take out a piece of notebook paper and make a hot dog fold over from the right side over to the pink line.
Foldable 2. Now, divide the right hand section into 5 sections by drawing 4 evenly spaced lines. The fold crease 3. Use scissors to cut along your drawn line, but ONLY to the crease!
Foldable 4. Write QUADRILATERALS down the left hand side The fold crease QUADRILATERALS
Foldable 5. Fold over the top cut section and write PARALLELOGRAM on the outside. The fold crease Parallelogram 6. Reopen the fold. QUADRILATERALS
Foldable 7. On the left hand section, draw a parallelogram. 8. On the right hand side, list all of the properties of a parallelogram. QUADRILATERALS
Parallelograms Now, Let’s review what we learned last class
A quadrilateral is a PARALLELOGRAM if and only if it has two sets of parallel sides
Properties 1.BOTH pairs of opposite sides are parallel 2.BOTH pairs of opposite sides are congruent 3. BOTH pairs of opposite angles are congruent 4.Consecutive angles are supplementary 5.diagonals BISECT each other
Foldable * Fold over the second cut section and write RECTANGLE on the outside. RECTANGLE * Reopen the fold. 1. Opposite sides parallel. 2.  Opposite sides congruent. 3.  Opposite angles are congruent. 4.  Consecutive angles are supplementary. 5.  Diagonals bisect each other. QUADRILATERALS
Foldable * On the left hand section, draw a rectangle. * On the right hand side, list all of the properties of a rectangle. 1. Opposite sides parallel. 2.  Opposite sides congruent. 3.  Opposite angles are congruent. 4.  Consecutive angles are supplementary. 5.  Diagonals bisect each other. QUADRILATERALS
RECTANGLE A parallelogram with FOUR RIGHT ANGLES
A quadrilateral is a RECTANGLE if and only if it has four right angles
RECTANGLE Diagonals are Congruent Theorem 8.13
Foldable * Fold over the third cut section and write RHOMBUS on the outside. RHOMBUS * Reopen the fold. 1.  Has 4 right angles. 2.  Diagonals are congruent. 3.  All properties of parallelogram. 1. Opposite sides parallel. 2.  Opposite sides congruent. 3.  Opposite angles are congruent. 4.  Consecutive angles are supplementary. 5.  Diagonals bisect each other. QUADRILATERALS
Foldable * On the left hand section, draw a rhombus. * On the right hand side, list all of the properties of a rhombus. 1. Opposite sides parallel. 2.  Opposite sides congruent. 3.  Opposite angles are congruent. 4.  Consecutive angles are supplementary. 5.  Diagonals bisect each other. 1.  Has 4 right angles. 2.  Diagonals are congruent. 3.  All properties of parallelogram. QUADRILATERALS
RHOMBUS A parallelogram with FOUR CONGRUENT SIDES
A quadrilateral is a RHOMBUS if and only if it has four congruent sides
RHOMBUS Diagonals Bisect A Pair of Opposite Angles Theorem 8.12
Diagonals are Perpendicular Theorem 8.11 RHOMBUS
Foldable * Fold over the fourth cut section and write SQUARE on the outside. SQUARE * Reopen the fold. 1. Has 4 Congruent  sides 2.  Diagonals bisect opposite angles. 3.  Diagonals are perpendicular. 4. All properties of parallelograms. 1. Opposite sides parallel. 2.  Opposite sides congruent. 3.  Opposite angles are congruent. 4.  Consecutive angles are supplementary. 5.  Diagonals bisect each other. 1.  Has 4 right angles. 2.  Diagonals are congruent. 3.  All properties of parallelogram. QUADRILATERALS
Foldable * On the left hand section, draw a square. * On the right hand side, list all of the properties of a square. 1. Opposite sides parallel. 2.  Opposite sides congruent. 3.  Opposite angles are congruent. 4.  Consecutive angles are supplementary. 5.  Diagonals bisect each other. 1.  Has 4 right angles. 2.  Diagonals are congruent. 3.  All properties of parallelogram. 1. Has 4 Congruent  sides 2.  Diagonals bisect opposite angles. 3.  Diagonals are perpendicular. 4. All properties of parallelograms. QUADRILATERALS
SQUARE A parallelogram with FOUR RIGHT ANGLES  AND  FOUR CONGRUENT SIDES
A quadrilateral is a SQUARE if and only if it has four congruent sides and four right angles
SQUARE Holds same properties as Rhombus and Rectangle.  In other words,   a quadrilateral is a square if and only if it is a rhombus and a rectangle.
Let's make a Venn Diagram Relating all of the Properities of our quadrilaterals
QUADRILATERALS PARALLELOGRAMS RHOMBUSES RECTANGLES Squares
QUADRILATERALS PARALLELOGRAMS RHOMBUSES RECTANGLES Squares 1. Diagonals bisect angles 2. Diag. perpendicular 3. 4 equal sides 1. Polygon 2. 4 sides 1. 4 rt. angles 2. Diagonals congruent 5. Consecutive angles supplementary 4. Diagonals Bisect 3. Opposite Sides parallel 2. Opposite Angles congruent 1. Opposite Sides congruent

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8 4 Rhombuses, Rectangles, And Squares

  • 3. Foldable 1. Take out a piece of notebook paper and make a hot dog fold over from the right side over to the pink line.
  • 4. Foldable 2. Now, divide the right hand section into 5 sections by drawing 4 evenly spaced lines. The fold crease 3. Use scissors to cut along your drawn line, but ONLY to the crease!
  • 5. Foldable 4. Write QUADRILATERALS down the left hand side The fold crease QUADRILATERALS
  • 6. Foldable 5. Fold over the top cut section and write PARALLELOGRAM on the outside. The fold crease Parallelogram 6. Reopen the fold. QUADRILATERALS
  • 7. Foldable 7. On the left hand section, draw a parallelogram. 8. On the right hand side, list all of the properties of a parallelogram. QUADRILATERALS
  • 8. Parallelograms Now, Let’s review what we learned last class
  • 9. A quadrilateral is a PARALLELOGRAM if and only if it has two sets of parallel sides
  • 10. Properties 1.BOTH pairs of opposite sides are parallel 2.BOTH pairs of opposite sides are congruent 3. BOTH pairs of opposite angles are congruent 4.Consecutive angles are supplementary 5.diagonals BISECT each other
  • 11. Foldable * Fold over the second cut section and write RECTANGLE on the outside. RECTANGLE * Reopen the fold. 1. Opposite sides parallel. 2. Opposite sides congruent. 3. Opposite angles are congruent. 4. Consecutive angles are supplementary. 5. Diagonals bisect each other. QUADRILATERALS
  • 12. Foldable * On the left hand section, draw a rectangle. * On the right hand side, list all of the properties of a rectangle. 1. Opposite sides parallel. 2. Opposite sides congruent. 3. Opposite angles are congruent. 4. Consecutive angles are supplementary. 5. Diagonals bisect each other. QUADRILATERALS
  • 13. RECTANGLE A parallelogram with FOUR RIGHT ANGLES
  • 14. A quadrilateral is a RECTANGLE if and only if it has four right angles
  • 15. RECTANGLE Diagonals are Congruent Theorem 8.13
  • 16. Foldable * Fold over the third cut section and write RHOMBUS on the outside. RHOMBUS * Reopen the fold. 1. Has 4 right angles. 2. Diagonals are congruent. 3. All properties of parallelogram. 1. Opposite sides parallel. 2. Opposite sides congruent. 3. Opposite angles are congruent. 4. Consecutive angles are supplementary. 5. Diagonals bisect each other. QUADRILATERALS
  • 17. Foldable * On the left hand section, draw a rhombus. * On the right hand side, list all of the properties of a rhombus. 1. Opposite sides parallel. 2. Opposite sides congruent. 3. Opposite angles are congruent. 4. Consecutive angles are supplementary. 5. Diagonals bisect each other. 1. Has 4 right angles. 2. Diagonals are congruent. 3. All properties of parallelogram. QUADRILATERALS
  • 18. RHOMBUS A parallelogram with FOUR CONGRUENT SIDES
  • 19. A quadrilateral is a RHOMBUS if and only if it has four congruent sides
  • 20. RHOMBUS Diagonals Bisect A Pair of Opposite Angles Theorem 8.12
  • 21. Diagonals are Perpendicular Theorem 8.11 RHOMBUS
  • 22. Foldable * Fold over the fourth cut section and write SQUARE on the outside. SQUARE * Reopen the fold. 1. Has 4 Congruent sides 2. Diagonals bisect opposite angles. 3. Diagonals are perpendicular. 4. All properties of parallelograms. 1. Opposite sides parallel. 2. Opposite sides congruent. 3. Opposite angles are congruent. 4. Consecutive angles are supplementary. 5. Diagonals bisect each other. 1. Has 4 right angles. 2. Diagonals are congruent. 3. All properties of parallelogram. QUADRILATERALS
  • 23. Foldable * On the left hand section, draw a square. * On the right hand side, list all of the properties of a square. 1. Opposite sides parallel. 2. Opposite sides congruent. 3. Opposite angles are congruent. 4. Consecutive angles are supplementary. 5. Diagonals bisect each other. 1. Has 4 right angles. 2. Diagonals are congruent. 3. All properties of parallelogram. 1. Has 4 Congruent sides 2. Diagonals bisect opposite angles. 3. Diagonals are perpendicular. 4. All properties of parallelograms. QUADRILATERALS
  • 24. SQUARE A parallelogram with FOUR RIGHT ANGLES AND FOUR CONGRUENT SIDES
  • 25. A quadrilateral is a SQUARE if and only if it has four congruent sides and four right angles
  • 26. SQUARE Holds same properties as Rhombus and Rectangle. In other words, a quadrilateral is a square if and only if it is a rhombus and a rectangle.
  • 27. Let's make a Venn Diagram Relating all of the Properities of our quadrilaterals
  • 29. QUADRILATERALS PARALLELOGRAMS RHOMBUSES RECTANGLES Squares 1. Diagonals bisect angles 2. Diag. perpendicular 3. 4 equal sides 1. Polygon 2. 4 sides 1. 4 rt. angles 2. Diagonals congruent 5. Consecutive angles supplementary 4. Diagonals Bisect 3. Opposite Sides parallel 2. Opposite Angles congruent 1. Opposite Sides congruent