 # Year 4 Summer Block 5 Properties of shape

• Slides: 11 Year 4 - Summer - Block 5 Properties of shape I know the angle is not obtuse. Alex I know the angle is acute. I think the angle is roughly 45˚ Who is correct? Explain your reasons. 2 Teddy Whitney © White Rose Maths 2019 Is the angle acute, obtuse or a right angle? Can you explain why? 3 © White Rose Maths 2019 Find the sum of the largest acute angle and the smallest obtuse angle in this list: 12˚ 98˚ 87˚ 5˚ 4 179˚ 90˚ © White Rose Maths 2019 Angle A Angle B is bigger than Angle A because it has longer sides. Ro n Do you agree with Ron? Explain your thinking. 5 © White Rose Maths 2019 Here are five angles. There are two pairs of identically sized angles and one odd one out. Which angle is the odd one out? Explain your reason. c a b d e 6 © White Rose Maths 2019 I know the angle is not obtuse. Alex I know the angle is acute. I think the angle is roughly 45˚ Teddy Whitney Who is correct? Explain your reasons. All are correct. You may reason about how Whitney has come to her answer and discuss that the angle is about half a right angle. Half of 90 © White Rose Maths 2019 7 degrees is 45 degrees. Is the angle acute, obtuse or a right angle? Can you explain why? The angle is a right angle. You may use an angle tester to demonstrate it, or you may extend the line to show that it is a quarter 8 © White Rose Maths 2019 Find the sum of the largest acute angle and the smallest obtuse angle in this list: 12˚ 98˚ 87˚ 5˚ 179˚ 90˚ 87 degrees + 98 degrees = 185 degrees 9 © White Rose Maths 2019 Angle A Angle B is bigger than Angle A because it has longer sides. Ro n Do you agree with Ron? Explain your thinking. Angle A and angle B are the same size. Ron has mixed 10 © White Rose Maths 2019 Here are five angles. There are two pairs of identically sized angles and one odd one out. Which angle is the odd one out? Explain your reason. c a Angle b and c are both right angles. Angle a and d are both half of a right angle or 45 degrees. b d e 11 Angle e is the odd one out. Angle e is an obtuse angle. © White Rose Maths 2019