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Maths · Grade 3 · Set A
Shape families
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A
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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 4 sides is a .
trianglepentagonquadrilateral
3
Four equal sides and four square corners. Which shape is it?
a trapezoida trianglea square
4
Which group does this shape go in?
a squarea rhombusa rectanglenone of these
5
Where does this tile go?
a squarea rhombusa rectanglenone of these
6
Sort this shape. Which group fits it?
a squarea rhombusa rectanglenone of these

Families overlap

7
Is this square also a rhombus?
YesNo
8
Is this rhombus also a rectangle?
YesNo
9
Every square is a rectangle.
TrueFalse
10
Every rectangle is a square.
TrueFalse
11
Join each clue to the shape it fits best.
  1. 14 equal sides
  2. 24 square corners
  3. 34 equal sides and 4 square corners
  4. 4only 3 sides
  • Arectangle
  • Btriangle
  • Crhombus
  • Dsquare
12
Circle every quadrilateral.
A
B
C
D
E
13
Both shapes have four equal sides. Which one also has four square corners?
the left onethe right one
14
Write one way a square and a rectangle are the same and one way they are different.
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Answer key · Set A
Shape families
1B A quadrilateral has four sides. The pentagon has 5, the octagon 8 and the hexagon 6.
2quadrilateral
3a square Equal sides and square corners together make a square.
4a rectangle It has four square corners, but its sides are not all equal. It is a rectangle.
5a rhombus All four sides are equal, but the corners are not square corners. It is a rhombus.
6none of these Its sides are not all equal and it has no four square corners. It is a quadrilateral, but none of these three.
7Yes A rhombus has four equal sides. A square has four equal sides too.
8No A rectangle needs four square corners. This rhombus has corners that are not square.
9True A square has four square corners, and that is what makes a rectangle.
10False A rectangle can have long sides and short sides. A square has four equal sides.
111-C, 2-A, 3-D, 4-B
12A, C, E Squares, rhombuses and rectangles all have four sides.
13the right one The square has four square corners. The rhombus on the left leans.
14Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.