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Maths · Grade 6 · Set B
Corners, Sides and Edges
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B
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Goal: 15 min
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Remember: A shape is its corners joined in order. A side is the gap between its numbers.

Sides and corners

1
The corners A, B, C and D make a rectangle. How long is side BC? Answer:
2
This triangle has corners A, B and C. How long is side BC? Answer:
3
How far is it all the way round the rectangle ABCD? Answer:
4
Which list gives the corners A, B, C and D of this rectangle, in order?
A(2, 1), B(5, 1), C(5, 6), D(2, 6)A(1, 2), B(1, 5), C(6, 5), D(6, 2)A(1, 2), B(1, 5), C(6, 2), D(6, 5)
5
In the pair (2, 6), the 2 tells how far up.
TrueFalse

Find and join

6
Which point is (3, 5)?
Point PPoint QPoint RPoint S
7
A, B and C are three corners of a rectangle. What are the numbers of the fourth corner D, written like (4, 2)? Answer:
8
Join each pair of corners to the length of the side between them.
  1. 1(2, 1) to (2, 8)
  2. 2(−4, 3) to (2, 3)
  3. 3(−1, −5) to (−1, 3)
  4. 4(1, 4) to (6, 4)
  • A5
  • B8
  • C7
  • D6
9
The corners of this L-shape are joined in order. How far is it all the way round? Answer:
10
What shape do these corners make?
trianglesquarerectanglepentagon

Stretch

11
The corners A, B, C and D make a rectangle across all four quarters. How long is side AD? Answer:
12
The perimeter of ABCD is 16.
TrueFalse
13
Draw the rectangle with corners A(1, 2), B(1, 4), C(5, 4) and D(5, 2). Join them in order.
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Answer key · Set B
Corners, Sides and Edges
15 B and C are in the same row. The first numbers are 2 and 7, a gap of 7 − 2 = 5.
24 B and C are in the same column. The second numbers are 1 and −3, on opposite sides of zero: 1 + 3 = 4.
320 The sides are 4, 6, 4 and 6. 4 + 6 + 4 + 6 = 20.
4A(1, 2), B(1, 5), C(6, 5), D(6, 2) The first number is across and the second is up. A is across 1, up 2. The first list swaps across and up, and the third joins the corners out of order.
5False The first number is across and the second is up. P is across 2 and up 6.
6Point R Across 3 and up 5 is R. P is across 5, up 3. Q is across 3, up 3. S is across 5, up 5.
7(6, 1) D is below C and right of A: across 6, up 1, so D is (6, 1).
81-C, 2-D, 3-B, 4-A Same side of zero: subtract. Opposite sides: add.
922 The sides are 5, 2, 3, 4, 2 and 6. 5 + 2 + 3 + 4 + 2 + 6 = 22.
10triangle It has three corners joined by three sides. That is a triangle.
116 A and D have the same second number. The first numbers are −3 and 3: 3 + 3 = 6.
12True AB is 4 − 1 = 3 and BC is 6 − 1 = 5. 3 + 5 + 3 + 5 = 16.
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