clix - Lesson 3: Discussing Definitions
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Lesson 3: Discussing Definitions
  • 3.1 Trapezium Story
  • 3.2 What is a Trapezium?
    GEOMETRIC REASONING

    What is a Trapezium?

     

    Task 1

    Discuss with others and choose one of the definitions that your class would like to use as a shared definition of trapezium.

    1. Kanasu’s definition: A trapezium is a quadrilateral with exactly one pair of sides parallel.
    2. Zo’s definition: A trapezium is a quadrilateral with at least one pair of sides parallel.
    3. Sahir’s definition: A trapezium is another name for a quadrilateral.
    4. None of these. I have my own definition.
    My definition is: ______________________________________________________________________________________

    (Click here to write)
    Enter    

    Task 2

    Give reasons for choosing the definition.

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    Enter


    Task 3 :

    1. Do you think a concept/term can be defined in more ways than one?
                   a. Yes

                   b. No

                   c. I am not sure

    1. Why?

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    Enter
     

    Extension Task 1

    Going by Kanasu’s definition, this is how parallelograms and trapeziums are represented.

    me_U04A06Q01_en_img01

    According to this, which of the following is correct?

    1. All trapeziums are parallelograms.
    2. All parallelograms are trapeziums.
    3. Some trapeziums are parallelograms.
    4. No trapezium is a parallelogram.
    (Click here to write)
    Enter


    Extension Task 2: 

    Going by Zo’s definition, this is how parallelograms and trapeziums are represented.

    me_U04A06Q02_en_img02

      According to this, which of the following is correct?

    1. All trapeziums are parallelograms.

    2. All parallelograms are trapeziums.

    3. Some trapeziums are parallelograms.

    4. No trapezium is a parallelogram.

      (Click here to write)
      Enter


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