The document defines key geometric terms like point, line, and plane. It provides pictures and descriptions to explain each term. Students are asked to fill out a KWLH chart to organize their existing and new knowledge on these concepts. They also complete an exercise identifying examples as points, lines, or planes. For homework, they are to draw and label examples involving these geometric objects.

1. Geometry of Shape and Size Undefined Terms June 14, 2011

2. KWLH Chart Form groups with maximum of five members each. The group shall fill the first two columns of the KWLH Chart. K – idea/concept they already know W – ideas/concepts they want to learn L – ideas/concepts they learned during the discussion H – how they learned the ideas/concepts

3. Undefined Terms Complete the table below by filling in the needed information. Plane Line Point Other Information How to name? Picture Undefined Term

4. Undefined Terms M Has infinite length and width but no thickness; is a flat surface Single capital letter Read: Plane M Slanted four-sided figure Plane Has infinite length but no width and thickness; is straight Two capital letters with a double arrowhead above them or a lower case letter Straight mark with two arrow heads Line Has no length, width or thickness; occupies no space • P Read: point P Dot • Point Other Information How to name? Picture Undefined Term

5. Exercise 1: Undefined Terms Determine whether each of the following suggests a point, a line, or a plane. 1. The corner of a room 2. The intersection of the ceiling and the front wall 3. One of the guitar strings 4. The side of a box 5. The tip of your finger 6. The shadow 7. The stars in the sky 8. The laser beam 9. The parking lot 10. The horizon

6. QUESTIONS??

7. Homework no. 1 Undefined Terms Draw the pictures of the following and then label properly. 1. Lines l 1 and l 1 intersect at P. 2. Line AB contains C. 3. Plane α and plane β intersect at t. 4. Lines s and point P are on plane β 5. Planes α and β meet at line PQ.