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Orthocentre of a triangle

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Construction 22. Orthocentre of a triangle

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Centroid of a triangle

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LCO, LCH Visit http://www.TheMathsTutor.ie to find out about our learning system for Project Maths. Get your Free Trial today!

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Parallelogram, given the length of the sides and the measure of the angles

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Construction 20 Parallelogram - Leaving Cert & Junior Cert Maths - Construction 20 Parallelogram

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Tangent to a given circle at a given point on it

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Construction 19. Tangent to a given circle at a given point on it

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Angle of 60⁰ without using a protractor or set square

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Construction 18. Angle of 60⁰ without using a protractor or set square

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Incentre and incircle of a triangle of a given triangle, using only straight edge and compass

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Construction 17. Incentre and incircle of a triangle of a given triangle

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Circumcentre and circumcircle of a given triangle, using only straight edge and compass

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Construction 16 Circumcentre and Circumcircle Of A Triangle - Leaving Cert & Junior Cert Maths

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Rectangle given side lengths

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Construction 15. Rectangle given side lengths

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

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

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

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

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Triangle, given ASA data

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Construction 12. Triangle, given ASA data

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Triangle, given SAS data

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Construction 11. Triangle, given SAS data

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Triangle, given lengths of 3 sides

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Construction 10. Triangle, given lengths of 3 sides

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

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

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Line segment of a given length on a given ray

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Construction 8 Line Segment Given Length On Given Ray - Leaving Cert & Junior Cert Maths

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Division of a line segment into 2, or 3 equal segments without measuring it

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Division of a line segment into any number of equal segments without measuring it

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Constructions 6 & 7 Division of a line segment into 2, 3 or any number equal segments

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Line parallel to given line, through a given point

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Construction 5. Line parallel to given line, through a given point

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

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

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Line perpendicular to a given line l, passing through a given point not on l

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Construction 3. Line perpendicular to a given line l, passing through a given point not on l

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

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

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Bisector of an angle, using only compass and straight edge

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Construction 1 Bisector of an Angle  - Leaving Cert & Junior Cert Maths - Cons. 1 Bisector Angle