Question

in exercises 9–11, sketch the figure described. 9. plane a and line $overline{bc}$ intersecting at point c 10. plane m and plane n not intersecting 11. lines a, b, and c intersecting at three points

Explanation:

Step1: Sketch for 9

Draw plane A as a flat surface. Draw line $\overline{BC}$ such that it touches plane A only at point C.

Step2: Sketch for 10

Draw two parallel - looking flat surfaces representing plane M and plane N to show they don't intersect.

Step3: Sketch for 11

Draw three lines a, b, c such that each pair of lines intersects at a different point.

Answer:

Sketch as described above for each exercise.