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Lesson details
Key learning points
- In this lesson, we learn how to describe the properties of scalene, isosceles and equilateral triangles. We will also learn how to identify and classify triangles inscribed in circles.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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6 Questions
Q1.
Decide if the statements are always true, sometimes or never true: All quadrilaterals have 4 lines of symmetry.
Always true
Never true
Q2.
Decide if the statements are always true, sometimes or never true: The number of lines of symmetry a polygon has is more than its number of sides.
Always true
Sometimes true
Q3.
Decide if the statements are always true, sometimes or never true: A regular polygon has as many lines of symmetry as it does sides.
Never true
Sometimes true
Q4.
Decide if the statements are always true, sometimes or never true: The number of lines of symmetry a polygon has is the same as its order of rotational symmetry.
Always true
Never true
Q5.
How many lines of symmetry does a parallelogram have?
1
2
4
Q6.
How many lines of symmetry does the shape below have?
1
2
6 Questions
Q1.
What is a triangle with at least two equal sides called?
Equilateral triangle
Obtuse triangle
Scalene triangle
Q2.
What is a triangle with three equal sides called?
Isosceles triangle
None
Scalene triangle
Q3.
Would it be possible to draw a scalene triangle with more than one obtuse angle?
Yes, this will be possible
Q4.
The sum of all the angles of a triangle is:
100 degrees
360 degrees
90 degrees
Q5.
Zaki and Connor are looking at the diagram on the right. Who do you agree with? Why?
Connor
Neither of them
Q6.
I am thinking of a triangle which have the following properties: no lines of symmetry and has one right angle. Which triangle am I thinking of?
Equilateral triangle
Isosceles triangle