By this end of the presentation you will be able to: Identify and model points, lines, and planes. Identify collinear and coplanar points. Identify non collinear and non coplanar points.

1. WELCOME TO THE CLASS! PRESENT BY MARIE GLEMAUD

2. Geometry Line . plane Point

4. Identify collinear and coplanar points.

7. Point is represented by a small dot.

8. It is named with a capital letter. Example: . A or “Point A” .C .B .D

10. It is represented by a straight line with two arrowheads to indicate that the line extends without end in two directions.

11. The symbol for a line

12. It is named using any two points on the line or with a lower case letterExample: Line w or AB or BA . . w A B

13. Plane Plane is a flat two dimensional surface which contains points, lines, segments. It is represented by a shape that looks like a tablecloth or wall. It is named by using a cursive capital letter in a corner. Name: Plane Or plane ABC F . A B C . . F

14. Naming collinear and coplanar points Collinear points are two or three points on the same line Collinear A, B,C and D , B, E Non collinear: Any three points combination that are not I the same line. E.g. points ABE Coplanar points are four or more point to point on the same plane. Coplanar points: ABCD Non-Coplanar point: . . . . . A B C D E . . A B D C . . . E

15. PRACTICE 1.Draw a noncollinear point, J K, L. 2.Draw JK, KL, LJ 3. Draw plane S. 4. Draw a collinear point, A, B, C. 5. Draw point Z.

16. PRACTICEName a point that is collinear with the given points. F and H G and K K and L M and J J and N K and H H and G J and F Ans. K N M F L F J M G F H K L N J M

17. PRACTICEName three points in the diagram that are not collinear. 2 3 1

18. PRACTICEDecide whether the statement is true (T) or false (F) 1. Points A,B and C are collinear. 2. Points A,B and C are coplanar. 3.Point F lies on DE. 4. DE lies on plane DEF. 5. BD and DE intersect. 6. BD is the intersection of plane ABC and plane DEF. Ans. 1. F 2. T 3. F 4. T 5. T 6. T

19. PRACTICEName a point that is coplanar with the given points 1. A, B, and C 2. D, C, and F 3. G, A, and D 4. E, F, and G 5. A, B and H Ans. 1. D 2. G 3. H 4. H 5. E

20. PRACTICEName all the points that are not coplanarwith the given points. 1.N, K and L 2. S, P and M 3. P, Q and N 4. R,S and L 5. P, Q, and R Ans. 1. R, S, P, Q 2.K,N,Q,R 3. S,R,L,K 4. M, N, P, Q 5. K,L,M,N

21. This is over ... Fantastic Bravo! Felicitation!

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23. Thankyou For Your PARTICIPATION Bye!