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Maths · Grade 4 · Set A
Sorting by the sides
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Remember: Parallel sides run the same way and never meet. Perpendicular sides meet at a right angle. Sort shapes by their sides and their angles.

Parallel sides and right angles

1
Does this shape have a pair of parallel sides?
YesNo
2
Do any two sides of this square run the same way and never meet?
YesNo
3
Does this rhombus have a right angle?
YesNo
4
What is true of the sides of this rectangle?
parallel onlyperpendicular onlybothneither
5
What is true of the sides of this trapezoid?
parallel onlyperpendicular onlybothneither
6
What is true of the sides of this triangle?
bothperpendicular onlyparallel onlyneither

Triangles and shapes

7
Which one is a right triangle?
A
B
C
8
What kind of triangle is it?
an obtuse trianglean acute trianglea right triangle
9
Which shape has no parallel sides?
A
B
C
10
How many pairs of parallel sides does this rhombus have?
two pairsone pairno pairs
11
Circle every shape that has at least one right angle.
A
B
C
D
E
12
Join each shape to what is true.
  1. 1rectangle
  2. 2right triangle
  3. 3rhombus that is not a square
  • A1 right angle
  • B0 right angles
  • C4 right angles
13
Tell how a rectangle and a trapezoid are different. Look at the sides and the angles.
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Answer key · Set A
Sorting by the sides
1No A triangle has three sides and no two of them run the same way, so it has no parallel sides.
2Yes The top and bottom sides of a square are parallel. So are the left and right sides.
3No None of its corners is a square corner. Two corners are wide and two are narrow.
4both Opposite sides are parallel. Sides that meet at a corner are perpendicular. So it has both.
5parallel only The top and bottom sides are parallel. No two sides meet at a square corner.
6perpendicular only Two sides meet at a square corner, so they are perpendicular. No two sides are parallel.
7C A right triangle has one square corner. Triangle A has a wide corner and triangle B has three narrow corners.
8an obtuse triangle One corner is wider than a square corner, so it is an obtuse triangle.
9B The trapezoid has one pair of parallel sides and the rhombus has two pairs. The triangle has none.
10two pairs Each side has a partner across from it that runs the same way. That makes two pairs.
11A, C A square and a rectangle have four square corners. The triangle, the rhombus and the trapezoid have none.
121-C, 2-A, 3-B
13Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.