Perpendicular line Construction Aim: Divide a line in half at 90º Perpendicular Bisector Perpendicular Line from a point NEAR a line P P P Perpendicular.

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Presentation transcript:

Perpendicular line Construction Aim: Divide a line in half at 90º Perpendicular Bisector Perpendicular Line from a point NEAR a line P P P Perpendicular Line from a point ON a line

Perpendicular Bisector A Step1 Aim: Divide a line in half at 90º Click to start Rule a line (leaving some space on each side of the line) Home

Perpendicular Bisector A Compass point Set your compass to about ¾ of the line length Step1 Aim: Divide a line in half at 90º Home

Perpendicular Bisector Compass point Set your compass to about ¾ of the line length Step1 Aim: Divide a line in half at 90º Home

Perpendicular Bisector Compass point Set your compass to about ¾ of the line length Step1 Aim: Divide a line in half at 90º Home

Perpendicular Bisector Compass point Arc into space each side of the line Step1 Aim: Divide a line in half at 90º Home

Perpendicular Bisector Compass point Arc into space each side of the line Step1 Aim: Divide a line in half at 90º Home

Perpendicular Bisector Compass point Arc into space each side of the line Step1 Aim: Divide a line in half at 90º Home

Perpendicular Bisector Compass point Arc into space each side of the line Step1 Aim: Divide a line in half at 90º Home

Perpendicular Bisector Compass point Arc into space each side of the line Step1 Aim: Divide a line in half at 90º Home

Perpendicular Bisector B Compass point Arc into space each side of the line Step1Step2 Aim: Divide a line in half at 90º Keep the compass the same Home

Perpendicular Bisector Compass point Arc into space each side of the line Step1Step2 Aim: Divide a line in half at 90º Keep the compass the same Home

Perpendicular Bisector Compass point Arc into space each side of the line Step1Step2 Aim: Divide a line in half at 90º Keep the compass the same Home

Perpendicular Bisector Compass point Arc into space each side of the line Step1Step2 Aim: Divide a line in half at 90º Home

Aim: Divide a line in half at 90º Perpendicular Bisector C With this point Use a ruler to join this point Step1Step2Step3Home

Perpendicular Bisector Aim: Divide a line in half at 90º And half way This should be 90º 90º Perpendicular bisector Step1Step2Step3 The EndCircumcircle Home

Circumcircle Do the Perpendicular Bisectors of the sides of a triangle meet at one point? This? Step1Step2Step3The EndCircumcircleHome

Circumcircle Do the Perpendicular Bisectors of the sides of a triangle meet at one point? OR This? Step1Step2Step3The EndCircumcircleHome

Circumcircle Do the Perpendicular Bisectors of the sides of a triangle meet at one point? Step1Step2Step3The EndCircumcircleHome

Perpendicular Line from a Point A Aim: Construct a line at 90º through a point near a line P Step1 Rule a line Mark a point near the line (about 4cm away is fine) Leave some space on either side of the line Click to start Home

Perpendicular Line from a Point A Compass point Set your compass to reach over the line so the arc will cut twice Aim: Construct a line at 90º through a point near a line P Step1Home

Perpendicular Line from a Point Compass point Set your compass to reach over the line so the arc will cut twice Aim: Construct a line at 90º through a point near a line P Step1Home

Perpendicular Line from a Point Compass point Aim: Construct a line at 90º through a point near a line P Move your compass to one side Step1Home

Perpendicular Line from a Point Compass point Aim: Construct a line at 90º through a point near a line P Step1Home

Perpendicular Line from a Point Compass point Aim: Construct a line at 90º through a point near a line P Step1Home

Perpendicular Line from a Point Compass point Aim: Construct a line at 90º through a point near a line P Step1Home

Perpendicular Line from a Point B Aim: Construct a line at 90º through a point near a line P Step1Step2Home

P Perpendicular Line from a Point Aim: Construct a line at 90º through a point near a line Keep the compass the same Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point near a line Keep the compass the same Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point near a line Keep the compass the same Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point near a line Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point near a line Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point near a line Step1Step2Home

P Perpendicular Line from a Point C Compass point Arc into space each side of the line Keep the compass the same Aim: Construct a line at 90º through a point near a line Step1Step2Step3Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Keep the compass the same Aim: Construct a line at 90º through a point near a line Step1Step2Step3Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Keep the compass the same Aim: Construct a line at 90º through a point near a line Step1Step2Step3Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point near a line Step1Step2Step3Home

P Perpendicular Line from a Point D With this point Use a ruler to join this point Aim: Construct a line at 90º through a point near a line Step1Step2Step3Home

P Perpendicular Line from a Point This should be 90º 90º Perpendicular Line Step1Step2Step3 The End Aim: Construct a line at 90º through a point near a line Home

Perpendicular Line from a Point A Aim: Construct a line at 90º through a point on a line P Step1 Click to start Rule a line Mark a point on the line (not in the middle) Leave some space on either side of the line Home

Perpendicular Line from a Point A Compass point Aim: Construct a line at 90º through a point on a line P Mark an arc on both sides of point P Step1Home

Perpendicular Line from a Point A Compass point Aim: Construct a line at 90º through a point on a line P Mark an arc on both sides of point P Step1Home

Perpendicular Line from a Point A Compass point Aim: Construct a line at 90º through a point on a line P Mark an arc on both sides of point P Step1Home

Perpendicular Line from a Point A Compass point Aim: Construct a line at 90º through a point on a line P Mark an arc on both sides of point P Step1Home

Perpendicular Line from a Point A Compass point Aim: Construct a line at 90º through a point on a line P Mark an arc on both sides of point P Step1Home

Perpendicular Line from a Point A Compass point Aim: Construct a line at 90º through a point on a line P Mark an arc on both sides of point P Step1Home

Perpendicular Line from a Point Compass point Set compass to ¾ the length of the arc Aim: Construct a line at 90º through a point on a line P Step1Step2Home

Perpendicular Line from a Point Compass point Set compass to ¾ the length of the arc Aim: Construct a line at 90º through a point on a line P Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point on a line Keep the compass the same Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point on a line Keep the compass the same Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point on a line Keep the compass the same Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point on a line Keep the compass the same Step1Step2Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point on a line Keep the compass the same Step1Step2Home

P Perpendicular Line from a Point C Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point on a line Keep the compass the same Step1Step2Step3Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point on a line Keep the compass the same Step1Step2Step3Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point on a line Keep the compass the same Step1Step2Step3Home

P Perpendicular Line from a Point Compass point Arc into space each side of the line Aim: Construct a line at 90º through a point on a line Step1Step2Step3Home

P Perpendicular Line from a Point D With this point Use a ruler to join this point Aim: Construct a line at 90º through a point on a line Step1Step2Step3Home

P P Perpendicular Line from a Point This should be 90º 90º Perpendicular Line Step1Step2Step3 The End Aim: Construct a line at 90º through a point on a line Home