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7.4 Special Quadrilaterals
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7.4 Special Quadrilaterals

Slide 1 - Diapositive

Planning
  • New theory
  • Quiz

Slide 2 - Diapositive

Parallelogram

Slide 3 - Carte mentale

Parallelogram
Write down:
A parallelogram is a quadrilateral where both pairs of opposite sides are parallel.

Slide 4 - Diapositive

Write down:
  • Has point symmetry
  • Opposite sides have the same length
  • Diagonals divide each other in half
  • Opposite angles are equal
Properties of a parallelogram

Slide 5 - Diapositive

Write down:
A rhombus is a quadrilateral with four equal sides.
Which foto is a rhombus?
A
B
C
D

Slide 6 - Quiz

Write down:
  • Diagonals are the axes of symmetry
  • Diagonals are perpendicular
  • Diagonals are bisectors of te angles
  • All properties of a parallelogram
Properties of a rhombus

Slide 7 - Diapositive

Trapezium
Write down:
A trapezium is a quadrilateral where at least one pair of opposite sides is parallel.

Slide 8 - Diapositive

Wat do you notice?
Isosceles trapezium

Slide 9 - Diapositive

Write down:
An isosceles triangle has one axis of symmetry.
Isosceles trapezium

Slide 10 - Diapositive

What do you see?
A
Teddy bear
B
Kite
C
Flag

Slide 11 - Quiz

Kite
Write down:
A kite is a quadrilateral where at least one diagonal is an axis of symmetry.

Slide 12 - Diapositive

Quiz

Slide 13 - Diapositive


What is this?
A
Parallelogram
B
Trapezium
C
Kite
D
Rhombus

Slide 14 - Quiz


What is this?
A
Trapezium
B
Isosceles trapezium
C
Kite
D
Parallelogram

Slide 15 - Quiz


What is this?
A
Parallelogram
B
Trapezium
C
Kite
D
Rhombus

Slide 16 - Quiz


What is this?
A
Parallelogram
B
Trapezium
C
Isosceles trapezium
D
Kite

Slide 17 - Quiz


What is this?
A
Parallelogram
B
Trapezium
C
Kite
D
Rhombus

Slide 18 - Quiz

What do you want for homework?
The whole paragraph 7.4
Ex. 39, 44, 48, 49, 51 on page 62

Slide 19 - Sondage