Grade 3 · Math · Unit 7 of 12
Polygons & Right Angles
Name polygons and spot parallel and perpendicular lines.
What your child practises
Triangles, quadrilaterals, pentagons, hexagons and octagons; regular and irregular polygons; parallel and perpendicular lines; and right angles.
Alberta Curriculum learning outcome: 3G1.1 · polygons, regular and irregular shapes, parallel and perpendicular lines and right angles
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
Does the shape have exactly four sides? Tap a shape, then tap its basket.
Sort into: ⬜ 4 sides · 🔺 not 4 sides
- ⏢trapezoid
- ▭rectangle
- 🛑octagon
- ⬢hexagon
- 🔺triangle
- ⬜square
Show answer
⬜ 4 sides: trapezoid, rectangle, square · 🔺 not 4 sides: octagon, hexagon, triangle
Hint: A quadrilateral has 4 straight sides. Triangles have 3, pentagons 5, hexagons 6 and octagons 8.
Question 2
Which quadrilateral has exactly one pair of parallel sides?
- a rectangle
- a square
- a trapezoid
- a rhombus
Show answer
a trapezoid
Hint: A trapezoid has just one pair.
Question 3
How many pairs of parallel sides does a rectangle have?
- 2
- 0
- 4
- 1
Show answer
2
Hint: Top and bottom are one pair. Left and right are another.
Question 4
How many sides does a hexagon have?
- 4
- 5
- 6
- 8
Show answer
6
Hint: Hex means six.
Question 5
A triangle has no right angles and sides of different lengths. Is it regular?
🔺- No, a regular triangle has equal sides and angles
- Yes, every triangle is regular
- Yes, because it has 3 sides
- No, because triangles are not polygons
Show answer
No, a regular triangle has equal sides and angles
Hint: Regular means all sides and angles are equal.
Question 6
A polygon with 3 sides is called a…
- pentagon
- hexagon
- quadrilateral
- triangle
Show answer
triangle
Hint: Tri means three.