Properties of 2D shapes
The Maths Habit Handout to print
Which shape is the odd one out? Why?
There is more than one answer. D has no right angles. C has sides that are not all equal. B looks different, but it is a square on its corner.
- Side
- A straight edge of a shape.
- Corner
- Where two sides meet. Another word for it is vertex.
- Right angle
- A quarter turn: the corner of folded paper.
- Parallel
- Going the same way and always the same distance apart.
Put the corner on it. Is it a right angle?
Put the corner on it. Is it a right angle?
- Number the corners.Start anywhere and go round.
- Count the sides.A shape has as many sides as corners.
- Put the corner on each angle.Mark each right angle with a small square.
- Arrows for parallel sides, dashes for equal sides.4 sides, 4 corners, 2 right angles
Number the corners. Count the sides. Put the corner on each angle and mark the right angles. 5 sides, 3 right angles
Number the corners. Count the sides. Put the corner on each angle and mark the right angles. 4 sides, 2 right angles
Number the corners. Count the sides. Put the corner on each angle and mark the right angles. 5 sides, 3 right angles
Number the corners. Count the sides. Put the corner on each angle and mark the right angles. 3 sides, 1 right angle
Number the corners. Count the sides. Put the corner on each angle and mark the right angles. 5 sides, 3 right angles
Number the corners. Count the sides. Put the corner on each angle and mark the right angles. 6 sides, 5 right angles
Number the corners. Count the sides. Put the corner on each angle and mark the right angles. 5 sides, 3 right angles
Mark the parallel sides with arrows. How many pairs are there? 1 pair
Number the corners. Count the sides. Put the corner on each angle and mark the right angles. 5 sides, 3 right angles
This shape stands on a corner. Put the corner on each angle. How many right angles? 4
Check the right angles, the parallel sides and the equal sides. Then name it.
Check the right angles, the parallel sides and the equal sides. Then name it.
Square or not?
Check the right angles, the parallel sides and the equal sides. Then name it. rectangle
Check the right angles, the parallel sides and the equal sides. Then name it. rhombus
Check the right angles, the parallel sides and the equal sides. Then name it. rectangle
Check the right angles, the parallel sides and the equal sides. Then name it. trapezium
Answer sheet
Guess my shape. Write its name on your board.
I have 4 sides, all equal, and no right angles.
rhombusI have 4 right angles. My sides are not all equal.
rectangleI have 3 sides and one right angle.
right-angled triangleI have 4 sides and just 1 pair of parallel sides.
trapezium
Can a triangle have two right angles?
NoA shape like a capital L has 6 sides. How many right angles does it have?
5Can a shape with 4 sides have exactly one right angle?
Yes
Count the sides. How many right angles?
5 sides, 3 right anglesMark the parallel sides with arrows. How many pairs are there?
1 pairName the shape.
square