Year 7 Maths — Basic geometrical ideas
Tell points, lines, rays and line segments apart, name the parts of an angle and a circle, and count the sides and diagonals of a polygon.
Name: ________________________
Before you start
Three lines are drawn on this circle. Take them in turn and find out what each one is called, looking at where each one starts and where it ends.
- 1. Radius — centre to edge
- 2. Diameter — right across, through the centre
- 3. Chord — edge to edge, missing the centre
Every diameter is also a chord — it is simply the longest one, and the only kind that passes through the centre.
1.How many diagonals can be drawn inside a quadrilateral?
2.An angle is made where two rays meet at a point. How many arms does one angle have?
3.Two straight lines in the same flat surface never meet, however far they are extended. What are they called?
- a) Perpendicular lines
- b) Intersecting lines
- c) Concurrent lines
- d) Parallel lines
4.A circle has a radius of 7 cm. How long is its diameter, in centimetres?
- a) 7
- b) 21
- c) 3.5
- d) 14
5.How many line segments make up the sides of a hexagon?
6.Three straight lines have been drawn on this circle. Tap the diameter.
Write the number of the part.
7.Put these shapes in order by how many sides they have, fewest first.
- Quadrilateral
- Triangle
- Hexagon
- Pentagon
- Octagon
8.A line has no ends, a ray has one end, and a line segment has two. Which of the three has a length you could measure with a ruler?
- a) A line
- b) All three of them
- c) A line segment
- d) A ray
Answer key — Year 7 Maths — Basic geometrical ideas
- 1. 2
- 2. 2
- 3. d) Parallel lines
- 4. d) 14
- 5. 6
- 6. 2 — the line right across through the centre
- 7. 1. Triangle 2. Quadrilateral 3. Pentagon 4. Hexagon 5. Octagon
- 8. c) A line segment