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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.

Published byProsper Sharp Modified over 9 years ago

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Presentation on theme: "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."— Presentation transcript:

1 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

2 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

3 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

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

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

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

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

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

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

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

11 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

12 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

13 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

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

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

16 Perpendicular Bisector Aim: Divide a line in half at 90º And half way This should be 90º 90º 1212 1212 Perpendicular bisector Step1Step2Step3 The EndCircumcircle Home

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

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

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

20 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

21 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

22 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

23 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

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

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

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

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

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

29 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

30 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

31 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

32 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

33 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

34 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

35 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

36 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

37 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

38 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

39 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

40 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

41 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

42 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

43 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

44 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

45 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

46 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

47 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

48 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

49 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

50 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

51 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

52 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

53 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

54 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

55 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

56 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

57 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

58 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

59 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

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