Maths Workout Year 4 Geometry Deepening Understanding LTD
- Slides: 11
Maths Workout Year 4 – Geometry ©Deepening Understanding LTD 2020
Three One Asha is facing north and takes a quarter turn clockwise. Which direction is she facing now? Marlon says… The lines form an angle. “This is an acute angle. ” Four Three Two True or False? This is a ______ angle. A rectangle has _____ angles. Do you agree with him? Explain your reasoning! ©Deepening Understanding LTD 2020
This is a right angle. Answers Four False Two Three One East A rectangle has 4 right angles. D – I do not agree with Marlon. A – The angle is not acute. B – An acute angle is smaller than a right angle. This angle is bigger than a right angle so it is an obtuse angle.
Three One The hands on the clock create an ______ angle. Draw a line which measures 5 cm and 3 mm. Alfie says… Measure the lines below. Four Two “A square has 4 horizontal lines. ” Is he correct? Convince me! ©Deepening Understanding LTD 2020
Three One The hands on the clock create an acute angle. D – Alfie is not correct. A – A square does not have 4 horizontal lines. B – A square has 2 horizontal lines: 8 cm Two Four 6 cm 7 mm Answers A line drawn accurately to 5 cm and 3 mm. and 2 vertical lines:
Three Straight lines that meet at a right angle are called parallel lines. How many lines of symmetry does a rectangle have? Darcey drew a shape with… How many parallel and perpendicular lines does this shape have? 2 right angles 1 acute angle Draw three shapes which have perpendicular lines. 1 obtuse angle. Four Three Two One True or False? Draw the shape she could have drawn. ©Deepening Understanding LTD 2020
Three One pair of parallel lines and no perpendicular lines. Answers will vary and could include: right-angled triangle, square, rectangle etc. Answers 2 Answers will vary and could include: Four One Two Three False, they are called perpendicular lines.
Four How many faces does a triangle based pyramid have? The shape in the mystery box has 8 vertices. What could it be? What shape is created by this net? Ranjit says this net can be used to create a sphere. Five One Two Three What is the name of this shape? Do you agree with him? Explain your reasoning! ©Deepening Understanding LTD 2020
Five cube or cuboid Answers Triangular prism D – I do not agree with Ranjit. A – The net cannot be used to create a sphere. B – The net can be used to create a cylinder. 4 Two Three Four One cone
Four A right angle is _____ degrees. What type of angle is greater than 0 degrees but less than 90 degrees? Draw an obtuse angle. Estimate the size of this angle. Caleb says… “This angle could be 95˚. ” Five Three Two One Complete the sentence. Do you agree with him? Explain your reasoning. ©Deepening Understanding LTD 2020
Answers will vary. Angles should be greater than 90 degrees but less than 180 degrees. Answers D – I do not agree with Caleb. A – The angle could not be 95˚. B – The angle is acute because it is smaller than a right angle which is 90˚. It could be closer to 85˚. Five Three Four acute Two One A right angle is 90 degrees. Around 45 degrees as it is half of a right angle.