PLANE GEOMETRY. DEFINITIONS. I. SOLIDS.-SURFACES.-LINES.-POINTS. 1. What is a geometrical solid? a. What dimensions has it? b. How is it bounded? 2. What is a surface? Its dimensions? a. A plane surface ? b. A curved surface? c. How is a surface bounded? 3. What is a line? Its dimension? a. What is a straight line or right line? b. What is a curved line? c. What is a broken line? Illustration. d. What is a mixed line? Illustration. NOTE. The mixed line and the broken line have no practical value in geometrical discussions. I 4. What is a point? 5. How may a line be generated? 6. How may a surface be generated? 7. How may a solid be generated? 8. What determines the position of a point? 9. What determines the position of a line? 10. What determines the position of a surface? 11. What determines the form of a surface? 12. What determines the form of a solid? 15. How is magnitude measured? a. Of a line? b. Of a surface? c. Of a solid? 16. What is geometry? b. Plane geometry? LOCUS. 17. What is the locus of a point? 18. PROBLEM I. Find the locus of a point a given distance from a given point. PROBLEM II. Find the locus of a point a given distance from a given circumference. |