math 7
units 8.1 to 8.4
basic concepts in geometry
Perpendicular lines
parallel lines
bisector lines
1. angle bisectors
To learn how to bisect an angle using a protractor, watch this:
2. perpendicular bisectors
for further information on drawing perpendicular bisectors, watch thiS video:
videos that may help
video 1 video 2
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video 3 video 4
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worksheets
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