Unit 4: Property-based Reasoning > page > Activity 1: 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. Kanasu’s definition: A trapezium is a quadrilateral with exactly one pair of sides parallel. Zo’s definition: A trapezium is a quadrilateral with at least one pair of sides parallel. Sahir’s definition: A trapezium is another name for a quadrilateral. None of these. I have my own definition. My definition is: ______________________________________________________________________________________ Task 2 Give reasons for choosing the definition. _________________________________________________________________________________________________________ Task 3 Do you think a concept/term can be defined in more ways than one? a. Yes b. No c. I am not sure Why? _________________________________________________________________________________________________________ Extension Task 1: Going by Kanasu’s definition, this is how parallelograms and trapeziums are represented. According to this, which of the following is correct? All trapeziums are parallelograms. All parallelograms are trapeziums. Some trapeziums are parallelograms. No trapezium is a parallelogram. Extension Task 2: Going by Zo’s definition, this is how parallelograms and trapeziums are represented. According to this, which of the following is correct? All trapeziums are parallelograms. All parallelograms are trapeziums. Some trapeziums are parallelograms. No trapezium is a parallelogram. [Contributed by administrator on 10. Januar 2018 21:42:55] × Tags L10 Views Show no. of views Rating 5 4 3 2 1 0 Graphs Dependency Graph Programs
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.
Kanasu’s definition: A trapezium is a quadrilateral with exactly one pair of sides parallel.
Zo’s definition: A trapezium is a quadrilateral with at least one pair of sides parallel.
Sahir’s definition: A trapezium is another name for a quadrilateral.
None of these. I have my own definition.
My definition is: ______________________________________________________________________________________
Task 2
Give reasons for choosing the definition.
_________________________________________________________________________________________________________
Task 3
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a. YesDo you think a concept/term can be defined in more ways than one?
b. No
c. I am not sure
Why?
_________________________________________________________________________________________________________
Extension Task 1:
Going by Kanasu’s definition, this is how parallelograms and trapeziums are represented.
According to this, which of the following is correct?
All trapeziums are parallelograms.
All parallelograms are trapeziums.
Some trapeziums are parallelograms.
No trapezium is a parallelogram.
Extension Task 2:
Going by Zo’s definition, this is how parallelograms and trapeziums are represented.
According to this, which of the following is correct?
All trapeziums are parallelograms.
All parallelograms are trapeziums.
Some trapeziums are parallelograms.
No trapezium is a parallelogram.