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Maths · Grade 3 · Set C
Squares are many things
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C
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Goal: 15 min
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Remember: Equal sides make a rhombus. Square corners make a rectangle. Both make a square. Turning a shape does not change its family.

Which family?

1
Which shape is a rectangle and a rhombus?
A
B
C
D
2
Mia says four equal sides means it must be a square. Which shape shows Mia is wrong?
A
B
C
3
One of these is a square that was turned. Which one is it?
A
B
C
4
This shape was turned. Which group fits it best?
a squarea rhombusa rectanglenone of these
5
A rectangle has square corners.
6
I have 4 sides. All my sides are equal. My corners are not square corners. I am a .
rectanglerhombussquare

All, some or none

7
All squares are rectangles, but not all rectangles are squares.
TrueFalse
8
Every four-sided shape is a rectangle.
TrueFalse
9
Circle every shape that is a rectangle.
A
B
C
D
E
10
Circle every quadrilateral that is not a rectangle.
A
B
C
D
E
11
Number the shapes from the fewest sides to the most sides.
  • pentagon
  • octagon
  • triangle
  • square
12
Draw a shape that is a rectangle and also a rhombus. Write its name.
13
Write why a square is also a rectangle.
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Answer key · Set C
Squares are many things
1C A rectangle has four square corners and a rhombus has four equal sides. Only the square has both.
2B The rhombus has four equal sides but its corners are not square corners.
3B A turned square still has four equal sides. A has sides that are not all equal and C has only 3 sides.
4a rectangle Turning does not change a shape. It has four square corners and sides that are not all equal: a rectangle.
54 A rectangle has four square corners.
6rhombus Four equal sides without square corners make a rhombus.
7True Every square has four square corners, so it is a rectangle. A long rectangle has sides that are not all equal, so it is not a square.
8False A trapezoid has four sides but no four square corners.
9A, C A square and a rectangle both have four square corners.
10B, D The rhombus and the trapezoid have four sides but not four square corners. The hexagon has 6 sides.
113, 4, 1, 2 A triangle has 3 sides, a square 4, a pentagon 5 and an octagon 8.
13Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.