Parallel Lines and Parallelograms Draw and explain parallel lines. Draw and define parallelograms.
Transcript of Parallel Lines and Parallelograms Draw and explain parallel lines. Draw and define parallelograms.
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Parallel Lines and Parallelograms
Draw and explain parallel lines.Draw and define parallelograms.
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What is a parallel line?
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What is a parallel line?
• Parallel lines never cross.
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What is a parallelogram?
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A parallelogram has four sides, and opposite sides are parallel.
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A parallelogram has four sides, and opposite sides are parallel.
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Parallel
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Measure the length of opposite sides on parallelograms A, B, and C
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What parallelograms can you find in our classroom?
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Parallelograms and Rectangles
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What makes them different from each other?
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Look at the shapes on page 132.
• Are some of these parallelograms also rectangles?
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Look at the shapes on page 132.
• Are some of these parallelograms also rectangles?
• Which ones?
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Look at the shapes on page 132.
The other parallelograms are not rectangles. How do these parallelograms differ from rectangles?
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Look at the shapes on page 132.
How are all parallelograms like rectangles?
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Do page 132
• Draw skinny and fat parallelograms.• Draw some with square corners.• Draw some with non-square corners and sides
that slant differently.
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Visual Thinking
• Can you find the hidden parallelograms?
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Visual Thinking
• Can you find the hidden parallelograms on page 133?
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Parallel
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Parallelograms
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Relate Different Quadrilaterals
• Today’s Goal: Describe quadrilaterals, parallelograms, rectangles, and squares.
• Categorize quadrilaterals.• Describe how quadrilaterals are alike and
different
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Vocabulary
• quadrilateral• parallelogram• rectangle• right angle• square
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Quadrilaterals
Draw a square.
Draw a rectangle.
Draw a parallelogram.
Draw another shape with 4 sides:
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What do all of these shapes have in common?
Draw a square.
Draw a rectangle.
Draw a parallelogram.
Draw another shape with 4 sides:
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All of these shapes have 4 sides and each side is a line segment.
square
rectangle
parallelogram
quadrilateral
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All of these shapes are quadrilaterals!
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Quadri means four latus means sides
square
rectangle
parallelogram
quadrilateral
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Quadrilateral means 4 sides.
square
rectangle
parallelogram
quadrilateral
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Draw 4 parallelograms on your board.
• What is a parallelogram?
• Are all parallelograms quadrilaterals?
• Are all quadrilaterals parallelograms?
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Draw 3 rectangles on your board.
• What is a rectangle?• Are all rectangles quadrilaterals?• Are all quadrilaterals rectangles?• Are all rectangles parallelograms?• Are all parallelograms rectangles?
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Draw 3 squares on your board.
• What is a square?• Are all squares quadrilaterals?• Are all quadrilaterals squares?• Are all squares parallelograms?• Are all parallelograms squares?• Are all squares rectangles?• Are all rectangles squares?
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Sort Quadrilaterals
• Cut out the shapes on page 135.
• Separate the shapes into quadrilaterals and not quadrilaterals.
• Which shapes are quadrilaterals?
• Why are all of the shapes that you listed quadrilaterals?
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Sort Quadrilaterals
• Sort the quadrilaterals into two groups: parallelograms and not parallelograms
• Which shapes are parallelograms?
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Sort Quadrilaterals
• Sort the quadrilaterals into two groups: rectangles and not rectangles
• Which shapes are rectangles?
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Sort Quadrilaterals
• Sort the quadrilaterals into two groups: squares and not squares
• Which shapes are squares?
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Identify Quadrilaterals
• Quadrilateral• Parallelogram• Rectangle• square
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Identify Quadrilaterals
• Quadrilateral• Parallelogram• Rectangle• square
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Identify Quadrilaterals
• Quadrilateral• Parallelogram• Rectangle• square
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Now it is your turn!
• Do page 137. • Place a check mark beside each word that
names the shape.