Maths Workout Year 4 Geometry Week 2 Deepening

Maths Workout Year 4 – Geometry Week 2 ©Deepening Understanding LTD 2020

B Which angle in this shape is the largest? Draw an angle which is smaller than this one. Monday C a b Three A c Draw an angle which is greater than 100˚. Jerry says… “All of the angles in this shape are equal. ” d Four Three Two One Order the angles from smallest to greatest. Do you agree with him? Explain your reasoning! ©Deepening Understanding LTD 2020

Three a Any angle smaller than the example. Monday Answers Any angle clearly greater than 100˚. D – I do not agree with Jerry. A – All of the angles are not equal. B – The shape has 2 equal acute angles and 2 equal obtuse angles. Four One Two Three B, C, A

Three True or False? These are equilateral triangles. What type of triangle is this? Tuesday Draw an isosceles triangle. Millie says… “This is an equilateral triangle. ” Four Three Two One Name the four types of triangle. Is she correct? Convince me! ©Deepening Understanding LTD 2020

Three False, they are isosceles triangles. Scalene Tuesday Answers An isosceles triangle should have 2 equal sides and angles. D – Millie is not correct. A – It is not an equilateral triangle. B – An equilateral triangle has equal sides and angles. This triangle has a right angle so it is a right-angled triangle. Four One Two Three Equilateral, right-angled, isosceles, scalene.

Three What is the name of this quadrilateral? Draw and label three different types of quadrilateral. Wednesday What is the same and what is different about these shapes? Asha drew the shape below… Four One Two Three A quadrilateral is a 2 D shape with _____ sides. Is this a quadrilateral? Explain how you know! ©Deepening Understanding LTD 2020

Three One A quadrilateral is a 2 D shape with 4 sides. trapezium D – No A – The shape is not a quadrilateral. B – A quadrilateral has 4 sides. Asha’s shape has 5 sides so it is a pentagon. Wednesday Answers Four Two Three Answers will vary and could include: rectangle, square, rhombus, parallelogram etc. Same: both quadrilaterals. Both have 2 pairs of parallel sides. Different: one is a parallelogram, one is a square, square has all right angles.

Four Always, Sometimes or Never? Draw a shape which only has one line of symmetry. Thursday Triangles have 3 lines of symmetry. Ranjit says he has drawn a line of symmetry on this image. How many lines of symmetry has this shape got? Five One Two Three If you draw a line through a 2 D shape and it looks the ______ on both sides then it is ______. Is he correct? Prove it! ©Deepening Understanding LTD 2020

Four D – Ranjit is not correct. A – He has not drawn an accurate line of symmetry. B – The shape does not look the same on each side of the line. 4 Any shape with 1 line of symmetry. Five One Two Three If you draw a line through a 2 D shape and it looks the same on both sides then it is symmetrical. Thursday Answers Sometimes. Equilateral triangles have 3 lines of symmetry but isosceles, scalene and rightangled triangles do not.

A B C D E F G H I J K Two Which squares need to be shaded to create symmetrical patterns? Draw half of a symmetrical shape. Now, challenge your partner to complete it correctly! Anita has completed a symmetrical pattern. L A B C D E F G H I J K L M N O P Friday Three One M N O P Has she done this correctly? Explain your reasoning! ©Deepening Understanding LTD 2020

A B C D E F G H I J K Four Answers will vary. L M N O P A B C D E F G H I J K D – Anita has not done this correctly. A – She has copied the pattern into the other space instead of creating a mirror image. B – The correct solution is: L One Five M N O P Friday Answers