G-CO.12 Construction #5 Constructing Perpendicular Lines
- Claire Verti
Geometric Constructions using a compass and a straightedge.
1. Draw line AB. 2. Put the compass point on A so that the compass measurement is over halfway to point B. Draw a long arc above and below the line. 3. Using the same compass measurement as step 2, place the compass on B and draw a long arc above and below the line so that it intersects the arc in step 2 at C and D. 4. Draw line CD. 5. Line AB line CD.