Basic Constructions (Leaving Cert Mathematics): Flashcards

📚Flashcards
Basic Constructions
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Practise the cards

9 cards from this deck

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Tools for geometric constructions

Compass and straight edge

Purpose of angle bisector

Divides angle into two equal parts

First step: angle bisector construction

Place compass at vertex and draw arc intersecting both arms

Purpose of perpendicular bisector

Perpendicular line that bisects segment into equal parts

Compass radius for perpendicular bisector

More than half the segment length

Objective: perpendicular from point not on line

Line perpendicular to given line through external point

Objective: perpendicular from point on line

Line perpendicular to given line through point on it

First step: perpendicular from external point

Place compass at given point and draw arc intersecting line at two points

Number of basic constructions covered

Four

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