Junior Cert Ordinary Level Maths Constructions

The Junior Cert Ordinary Maths Constructions course contains 13 Geometry constructions.

Junior Cert Ordinary Level maths have been examined almost every year in the Junior Cert Ordinary Level exam.  If you are aiming for a high grade, you can’t afford to neglect this part of the course as this will surely help you in your maths exam papers.

For general guidance on how to learn and revise Junior Cycle Constructions, click here.

Here’s the full list of Ordinary Maths Constructions Junior Cert questions, and the demo videos are embedded below this.

1. Bisector of an angle, using only compass and straight edge
2. Perpendicular bisector of a segment, using only compass and straight edge
3. Line perpendicular to a given line l, passing through a given point on l
4. Line parallel to given line, through a given point
5. Division of a line segment into 2, or 3 equal segments without measuring it
6. Line segment of a given length on a given ray
7. Angle of a given number of degrees with a given ray as one arm
8. Triangle, given lengths of 3 sides
9. Triangle, given SAS data
10. Triangle, given ASA data
11. Right-angled triangle, given length of hypotenuse and one other side
12. Right-angled triangle, given one side and one of the acute angles
13. Rectangle given side lengths

See below for our demonstration videos showing you exactly how to do them.

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Full Playlist here!

1 – Bisector of an angle, using only compass and straight edge

2 – Perpendicular bisector of a segment, using only compass and straight edge

4 – Line perpendicular to a given line l, passing through a given point on l

5 – Line parallel to given line, through a given point

6 and 7 – Division of a line into 2, 3 or any number of equal segments without measuring it [7 Not on Ordinary Level]

8 – Line segment of a given length on a given ray

9 – Angle of a given number of degrees with a given ray as one arm

10 – Triangle, given lengths of 3 sides

11 – Triangle, given SAS data

12 – Triangle, given ASA data

13 – Right-angled triangle, given length of hypotenuse and one other side

14 – Right-angled triangle, given one side and one of the acute angles

15 – Rectangle given side lengths