Year 8 Term 2 - Maths Key Words

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Across
  1. 3. when we use pencil, a ruler and compasses in maths to create a shape or split something in half
  2. 6. up and down
  3. 7. a line that cuts through a circle but is not the diameter
  4. 8. when we rotate something to the right
  5. 10. when we rotate something to the left
  6. 12. which way we turn something
  7. 13. the portion of a circle enclosed by two radii and an arc
  8. 14. on a graph, we have the y ____ and the x ____
  9. 16. represented by this symbol: √
  10. 18. a rule in algebra or other branches of mathematics expressed by symbols or formulae
  11. 19. a straight line that goes from edge to edge of a circle and passes through the centre
  12. 20. the middle point of a circle
  13. 22. one of the four transformations, we move shapes around a point and we might use tracing paper
  14. 23. the technical term for splitting an angle in half
  15. 26. the Greek who came up with the rule we use for right angled triangles, he also has a famous cup
  16. 27. a word to describe a shape being an exact reflection on both sides of a mirror line
  17. 28. we find the area of this shape with the formula b x h x 0.5
  18. 30. a portion of the circumference
  19. 31. one of the four transformations, we use a mirror line
  20. 33. the outer edge of a circle
  21. 34. a straight line that touches a circle at a single point but does not cross the circumference
  22. 35. we use it to find the area and circumference of circles, Miss Reggler has it on her badge
  23. 36. a word to describe when something is round
  24. 38. the side of a triangle opposite the right angle, we label it c
  25. 39. we find the area of this using the formula πr²
  26. 41. we find the area of this shape with the formula (a+b)x h x 0.5
Down
  1. 1. the technical term for splitting a line in half
  2. 2. the distance from the centre of a circle to the outer edge of a circle
  3. 4. we use this when we are performing a translation, the horizontal movement is on the top and the vertical movement is on the bottom
  4. 5. a word used to describe translation, reflection, rotation and enlargement
  5. 9. what we reflect in
  6. 11. one of the four transformations, shapes will increase or decrease in size when we do this
  7. 15. part of a circle made when it is cut by a line
  8. 17. we find the area of this shape with the formula b x h and the angles of this shape are all right angles
  9. 21. we find the area of this shape with the formula b x h and while it can be a rectangle, it does not have to be
  10. 24. when we multiply a number by itself
  11. 25. one of the four transformations, we use column vectors to describe the movement
  12. 29. left and right
  13. 31. when a triangle has an angle that it 90 degrees, we call it a __________ triangle
  14. 32. we find the area of this by calculating πr² and then dividing the answer by 2
  15. 37. the word to describe when a shape is made up of more than one simple shape
  16. 40. the space a shape takes up, we use units like cm² and m²