To recognise and describe 2 D Shapes Name

To recognise and describe 2 D Shapes

Name these 2 D shapes. (You should know at least five, the others may be new) square trapezium pentagon rectangle rhombus triangle hexagon parallelogram

Name these 2 D shapes. triangle square parallelogram pentagon rhombus hexagon rectangle trapezium

Label the shapes. _______________

Label the shapes. pentagon hexagon quadrilateral The pentagon and hexagon are regular shapes, as all the sides and angles are the same size. Quadrilateral just means it is a four sided shape. Do you know a regular quadrilateral (where all the sides are the same length)? If the pentagon had different length sides and different size angles (as long as it had just 5) it would be called an irregular pentagon. The same would be true for the hexagon – as long as it has 6 sides and angles it would be an irregular hexagon.

Draw these shapes. Use a ruler. • A quadrilateral with at least 1 acute angle – you will need to think back to before half term to remember what an acute angle is…. • A triangle where all the sides are different lengths.

Draw these shapes. Use a ruler. Answers will vary, examples given below: • A quadrilateral with at least 1 acute angle. • A triangle where all the sides are different lengths (This type of triangle has a special name, it is called scalene).

Read the description. • Less sides than a pentagon. • 1 line of symmetry. • No acute angles. Which shape are the clues describing?

Read the description. • Less sides than a pentagon – less than 5 • 1 line of symmetry – Could be the pentagon or the semicircle • No acute angles – Technically the semi-circle has no angles as there are not two straight lines meeting at a point (vertex). Circle the shape it is describing.

Guess the shape. I have: • No obtuse or acute angles. • An equal number of sides and right angles. • 4 lines of symmetry.

Guess the shape. I have: • No obtuse or acute angles. • An equal number of sides and right angles. • 4 lines of symmetry. A square

Draw a shape which could represent each letter in the Venn diagram. Less than 4 sides A 1 obtuse angle C D B

Problem Solving 1 Draw a shape which could represent each letter in the Venn diagram. Less than 4 sides Example answers 1 obtuse angle

Always, sometimes, never? Quadrilaterals do not have acute angles. Explain your answer and draw shapes to prove it. Remember to use a ruler.

Always, sometimes, never? Quadrilaterals do not have acute angles. Explain your answer and draw shapes to prove it. Remember to use a ruler. Sometimes, because squares and rectangles don’t have acute or obtuse angles (they have 4 right angles), but some quadrilaterals can have acute angles.

Explain what is similar about these shapes using some of the mathematical language you now know (sides, right-angle, acute angle, obtuse angle, parallel lines, perpendicular lines)

Explain what is similar about these shapes. Each shape is made up of one type of angle. For example, the pentagon is made up of 5 obtuse angles, the triangle is made up of 3 acute angles and the square is made up of 4 right angles. The square has two sets of parallel lines (vertical and horizontal)