Geometry Worksheet 1.4 – Intersections Name ____________________________________________ Term Description Picture Intersection of two lines Two lines intersect in a _____________ Use the diagram to name the intersection of each pair of lines. 1. DC and EC ____________ 2. AB and DC ___________ 3. ED and CD ____________ 4. CE and DE ___________ 5. AB and EC ____________ 6. AC and ED ___________ * 7. *In #6, lines AC and ED do not cross. Two coplanar lines that do not intersect are _____________________. Decide whether each statement is true or false. 8. AB and DE intersect at point C._________ 9. AC and BF intersect at point F._________ 10. BF and DC appear not to intersect._________ Use the diagram displaying major streets in Grosse Pointe Woods as lines and street intersections as points. 11. Label the intersection of Vernier Rd. and Mack Ave. as point A. 12. Label the intersection of Mack Ave. and Fisher Rd. as point B. 13. Name two streets that don’t appear to intersect. _____________________________________________________ 14. Name two streets that appear to intersect somewhere that is not drawn onto the map. _______________________________ 15. Which streets intersect closest to your house? ___________________________________________ 16. Name your street and a street parallel to it. ______________________________________________ Term Description Picture Intersection of two planes Two planes intersect in a _____________ Name the intersection of the given planes or write no intersection. USE CORRECT NOTATION! 17. X and Y ____________ 18. Z and Y ____________ 19. X and Z ____________* 20. R and S ____________ 21. P and S ____________ *In #19 the planes do not cross. Planes that do not intersect are _______________________. Answer the following multiple choice questions. 22. A line contains _________ points 23. A plane contains _________ points A. One B. Two C. Ten D. Infinite A. One B. Two C. Four D. Infinite 24. Two lines intersect in a ________ 25. Two planes intersect in a ________ A. Point B. Line C. Segment D. Plane A. Point B. Line C. Segment D. Plane 26. A line and a plane intersect in a ____________ 27. Two points determine a _______ A. Point B. Line C. Segment D. Plane A. Point B. Line C. Segment D. Plane .