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Maths · Grade 3 · Set B
Sort the four-sided shapes
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B
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Date
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Goal: 15 min
Score/ 12
Remember: Equal sides make a rhombus. Square corners make a rectangle. Both make a square. They are all quadrilaterals.

Sides and corners

1
Which one is a quadrilateral?
A
B
C
D
2
A shape with 5 sides is a .
hexagontrianglepentagon
3
All 4 sides are equal. The corners are not square corners. Which shape is it?
a squarea rhombusa rectangle
4
This shape was turned. All 4 sides are equal and all 4 corners are square corners. Which group fits it best?
a squarea rhombusa rectanglenone of these
5
Circle every shape with 4 sides.
A
B
C
D
6
This rectangle has four square corners.
TrueFalse

Families overlap

7
Every rhombus is a square.
TrueFalse
8
A square is a rectangle and a rhombus at the same time.
TrueFalse
9
Join each clue to the shape it fits.
  1. 13 sides
  2. 24 sides
  3. 35 sides
  4. 46 sides
  • Aquadrilateral
  • Bpentagon
  • Ctriangle
  • Dhexagon
10
Which shape is a rectangle but not a square?
A
B
C
11
A rhombus has equal sides.
12
Both shapes have four sides. Which one has four equal sides?
the left onethe right one
13
Draw a rhombus that is not a square.
14
Write two things that are true for every square.
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Answer key · Set B
Sort the four-sided shapes
1C A quadrilateral has four sides. The triangle has 3, the octagon 8 and the pentagon 5.
2pentagon
3a rhombus Four equal sides without square corners make a rhombus.
4a square Turning a shape does not change it. Four equal sides and four square corners make a square.
5B, D The trapezoid and the rectangle have four sides. The triangle has 3 and the hexagon has 6.
6True A rectangle has four square corners.
7False A square needs four square corners. This rhombus leans, so its corners are not square corners.
8True A square has four square corners (a rectangle) and four equal sides (a rhombus).
91-C, 2-A, 3-B, 4-D
10B The rectangle has square corners but its sides are not all equal.
114 A rhombus has four equal sides.
12the right one The rhombus has four equal sides. The trapezoid's top and bottom are not the same length.
14Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.