Classifying triangles

Maths

Classifying 2-D shapes

What is a triangle with at least two equal sides called?

What is a triangle with three equal sides called?

Would it be possible to draw a scalene triangle with more than one obtuse angle?

The sum of all the angles of a triangle is:

Zaki and Connor are looking at the diagram on the right. Who do you agree with? Why?

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?

Decide if the statements are always true, sometimes or never true: All quadrilaterals have 4 lines of symmetry.

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.

Decide if the statements are always true, sometimes or never true: A regular polygon has as many lines of symmetry as it does sides.

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.

How many lines of symmetry does a parallelogram have?

How many lines of symmetry does the shape below have?

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Classifying triangles

Lesson outcome