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Maths · Grade 6 · Set C
Across the Zero Lines
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C
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Goal: 15 min
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Remember: A shape is its corners joined in order. Same side of zero: subtract. Opposite sides: add.

Sides and corners

1
This triangle has corners A, B and C. How long is side AB? Answer:
2
The corners A, B, C and D make a rectangle. How long is side CD? Answer:
3
How far is it all the way round the rectangle ABCD? Answer:
4
What shape do these corners make, joined in order?
pentagonhexagonrectangletriangle
5
Which list gives the corners A, B, C and D of this rectangle, in order?
A(1, −2), B(4, −2), C(4, 3), D(1, 3)A(−2, 1), B(−2, 4), C(3, 1), D(3, 4)A(−2, 1), B(−2, 4), C(3, 4), D(3, 1)A(2, 1), B(2, 4), C(−3, 4), D(−3, 1)

Find and join

6
A, B and C are three corners of a rectangle. What are the numbers of the fourth corner D, written like (4, 2)? Answer:
7
The corners of this U-shape are joined in order. How far is it all the way round? Answer:
8
Join each pair of corners to the length of the side between them.
  1. 1(−5, 2) to (−5, −4)
  2. 2(−6, 1) to (1, 1)
  3. 3(2, −4) to (2, 5)
  4. 4(−3, −1) to (1, −1)
  • A4
  • B9
  • C6
  • D7
9
A, B and C are three corners of the rectangle ABCD. How far is it all the way round the rectangle? Answer:
10
The perimeter of ABCD is 15.
TrueFalse

Stretch

11
Draw the shape with corners A(−2, 1), B(−2, 3), C(2, 3) and D(2, 1). Join them in order.
12
Write how you find the length of a side from (−3, 2) to (4, 2). Then write the length.
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