Home > Construct with GeoGebra -> Compass and Straightedge -> #4 Bisect a Line Segment -> HELP
Do the givens. |
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Draw line segment by clicking twice in drawing pad. |
Point A
Point B
a=Segment[A,B]
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Get ready to draw circles with a radius bigger than 1/2 of AB. |
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Draw a third point on the line segment AB about 2/3 of the way from A to B.
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Point C
C=Point[a]
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Draw 2 circles with radius AC - one with center A and other with center B. |
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Draw circle with radius AC and center A by clicking on points A, C and A. |
Circle b=Circle[A, Segment[A, C] |
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Draw circle with radius AC and center A by clicking on points A, C and B. |
Circle c=Circle[B, Segment[A, C] |
Draw intersection points of circles
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Draw point D by clicking on top intersection point of circles b and c. |
D=Intersect[c, d, 1]. |
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Draw point E by clicking on bottom intersection point of circles b and c. |
E=Intersect[c, d, 2]. |
Draw bisector. (This line is also perpendicular to AB). |
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Draw line through D and E by clicking on points D and E. |
b=Line[D,E] |
Draw midpoint M. |
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Draw point F by clicking on intersection point of circles b and c. |
F=Intersect[a, b]. |
Label: Use right-click to rename F to M.
Decorate: Right-click on any object, choose "Properties" and go for it! When done, click on Close. |
Check construction. |
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Click and drag endpoints of ends of segment to change its size. |
The point M should be midpoint. |
Save construction. Command: File -> Save. |
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