Points X, Y, and Z are the vertices of one of the four triangular faces of the pyramid. To shade the plane, shade the interior of the triangle formed by X, Y, and Z. Shade the plane that contains X, Y, and Z. Points, Lines, and Planes

1. Name three collinear points. 2. Name two different planes that contain points C and G. 3. Name the intersection of plane AED and plane HEG. 4. How many planes contain the points A, F, and H? 5. Show that this conjecture is false by finding one counterexample: Two planes always intersect in exactly one line. Use the diagram at right. D, J, and H planes BCGF and CGHD HE 1 Sample: Planes AEHD and BFGC never intersect. Points, Lines, and Planes

As you look at the cube, the front face is on which plane? The back face is on which plane? The left face is on which plane? The back and left faces of the cube intersect at? Planes HGC and AED intersect vertically at? What is the intersection of plane HGC and plane AED? Points, Lines, and Planes

. Name each shaded plane 1-2