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# Constructions1

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### Transcript

• 1. Perpendicular bisector of a line. Perpendicular Bisector Join up the points where your circles cross. Draw the same size circle with centre B Draw a circle with centre A. A B
• 2. Perpendicular from a point to a line. Draw an arc with the point as the centre.
• 3. Perpendicular from a point to a line. Draw circles with centres on the two arcs. Perpendicular line
• 4. Perpendicular from a point on a line. Draw arcs from the point that cut the line.
• 5. Perpendicular from a point on a line. Draw circles with centres on the two arcs.
• 6. Angle Bisector. Draw arcs from the angle to cut the lines
• 7. Angle Bisector. Draw circles with centres on the two arcs.
• 8. Angle Bisector. Has the line bisected the angle?
• 9. From the starting point draw a circle of any radius. From this point draw a circle (arc) of the same radius
• 10. Join the intersection to your starting point. Measure your angle
• 11. 90 degree angle. Start with the 60 0 angle (but don’t join it up) From this point draw a circle (arc) of the same radius
• 12. 90 degree angle. From these arcs draw two more intersecting circles Join up the intersections You now have a right angle!
• 13.