[size=150][color=#cc0000]FIRST DIAGRAM: Drag the diagram around by moving the points, and then answer the questions.[/color][/size]
1. X and R are _____________. (Check all that apply.)
2. X, R, and T are _____________.
3. What is the intersection of [math]\text{\overleftrightarrow{XY}}[/math] and plane Q?
4. a) Draw a line through T and S.[br] b) Draw a plane through R, E, and X.