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Maths · Grade 4 · Set C
Sorting by two rules
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C
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Goal: 15 min
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Remember: Sort a shape by its sides (parallel, perpendicular) and by its angles (right, acute, obtuse). A shape can belong to more than one group.

Sides and corners

1
What is true of the sides of this kite?
parallel onlyperpendicular onlybothneither
2
Which shape has exactly 2 right angles?
A
B
C
3
A square is also a rectangle, because it has 4 right angles and 2 pairs of parallel sides.
TrueFalse
4
This rhombus has 4 right angles.
TrueFalse
5
Which shape has a right angle AND a pair of parallel sides?
A
B
C

Triangles and thinking

6
How many of this triangle's angles are acute?
7
What kind of triangle is it?
an acute trianglea right trianglean obtuse triangle
8
Circle every shape that has no right angle.
A
B
C
D
E
9
I have 4 sides and 2 pairs of parallel sides. All my sides are equal. I have no right angles. Which shape am I?
A
B
C
10
Join each shape to what is true.
  1. 1right triangle
  2. 2obtuse triangle
  3. 3acute triangle
  4. 4trapezoid
  • Ahas 3 angles narrower than a square corner
  • Bhas one pair of parallel sides
  • Chas 1 right angle
  • Dhas 1 angle wider than a square corner
11
Put the shapes in order from the fewest right angles to the most right angles.
  • right triangle
  • right trapezoid
  • rhombus
  • rectangle
12
Tell how a rectangle and a right trapezoid are alike and how they are different.
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