Form and test ideas about quadrilaterals Quadrilaterals

1
The Quadrilateral Family

• Nov 17, 2009

2
Our Goals

• Today, we will
• Learn about the quadrilateral family of shapes
• Name shapes by their sides and angles
• Put the shapes in their immediate families based
  upon their properties
• GLEs addressed
• Form and test ideas about quadrilaterals

3
Quadrilaterals

• A polygon that has exactly four sides that form a
  closed shape
• The sum of the interior angles is 360º

4
Parallelogram

• 1. Both pairs of opposite sides are parallel and
  congruent.
• 2. Diagonals bisect each other.

5
Trapezoid

• 1. One pair of opposite sides are parallel

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Kites

• 1. Two pairs of adjacent sides are congruent.
• 2. Diagonals intersect at right angles.
• 3. One diagonal bisects the other.

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Rectangle

• 1. Both pairs of opposite sides are parallel and
  congruent.
• 2. Diagonals bisect each other and are congruent.
• 3. Has four right angles.

8
Rhombus

• 1. Both pairs of opposite sides are parallel.
• 2. All sides are congruent.
• 3. Diagonals bisect each other and are congruent.

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Isosceles Trapezoid

• 1. One pair of opposite sides are parallel.
• 2. Non parallel sides are congruent.
• 3. Diagonals are congruent.

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Square

• 1. Both pairs of opposite sides are parallel.
• 2. All sides are congruent.
• 3. Diagonals bisect each other and are congruent.
• 4. Has four right angles.

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ACTIVITY!!

• Complete the quadrilateral family worksheet
• All the shapes we learned about today are related
  in some way. Use your notes to fill out the
  worksheet to discover their close and distant
  relatives.
• Complete the quadrilateral family characteristics
  worksheet
• Fill in each box with the name of the shape based
  on the 1st worksheet
• Write the properties for each in their box
• Properties that are shared among the shapes do
  not need to be written twice

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• Complete the quadrilateral family pictures
  worksheet
• Label each of the vertices with a letter
• Label each diagram with the visual representation
  of its properties
• Write the expression for each property next to
  the picture
• Complete the Venn diagram given