1-5 Basic Constructions

1-5 Basic Constructions - Basic Constructions Basic...

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Unformatted text preview: Basic Constructions Basic Constructions Section 1­5 In a construction you use a straightedge and a compass to draw a geometric figure. Straightedge – a ruler with no markings on it Compass – a geometric tool used to draw circles and arcs A Perpendicular Lines Perpendicular Lines Perpendicular lines are two lines that intersect to form right angles. The symbol ⊥ means “is perpendicular to”. l B C l ⊥ AC AB ≅ BC A perpendicular bisector of a segment is a line, segment, or ray that is perpendicular to the segment at its midpoint Angle Bisector Angle Bisector An angle bisector is a ray that divides an angle into two congruent coplanar angles. A D B uuu r BD is bisector of ∠ABC C ...
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