Lesson 2 Cool Down: Constructing a Parallel Line
Here is point A on line l
and point B
that is not on l (see GeoGebra Applet).
Use the digital straightedge and compass moves to create a line parallel to the given line that goes through point B:
1. Create a line through A and B extending in both directions. Label this line p.
2. Create a circle centered at A with radius AB. This circle intersects with line l
in 2 places. Label the intersection point to the right of A as C.
3. Create a circle centered at B with radius BA. This circle intersects with line p
at A and 1 other point. Label the new intersection point as D.
4. Create a circle centered at D with a radius of length BC. This circle intersects with the circle centered at B in 2 places. Label the intersection point to the right of B as E.
5. Using a different colored text, create a line through B and E extending in both directions.
6. Don't forget to take a picture and upload to Kami. Good luck.
and point Bthat is not on l (see GeoGebra Applet).
Use the digital straightedge and compass moves to create a line parallel to the given line that goes through point B:
1. Create a line through A and B extending in both directions. Label this line p.
2. Create a circle centered at A with radius AB. This circle intersects with line lin 2 places. Label the intersection point to the right of A as C.
3. Create a circle centered at B with radius BA. This circle intersects with line pat A and 1 other point. Label the new intersection point as D.
4. Create a circle centered at D with a radius of length BC. This circle intersects with the circle centered at B in 2 places. Label the intersection point to the right of B as E.
5. Using a different colored text, create a line through B and E extending in both directions.
6. Don't forget to take a picture and upload to Kami. Good luck.