Circles In Our Daily Life
Name : Chuah Khoy Yan Class : 5 Daisi School : SMK Bandar Utama Damansara (4)
PROJECT WORK FOR ADDITIONAL MATHEMATICS 2009 - CIRCLES IN OUR DAILY LIFE
CHUAH KHOY YAN
CONTENT
Title 1. 2. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Introduction Task Specification Part 1(a) Part 1(b) Part 2(a) Part 2(b) Part 2(c) Part 3(a) Part 3(b) Part 3(c) Part 3(d) Part 3(e) Conclusion Acknowledgement Page .. 1 - 2 .. 3 - 4 5 6 .. 7 - 8 .. 9 - 12 . 13 - 14 15 16 .. 17 - 19 20 .. 21 - 22 23 24
PROJECT WORK FOR ADDITIONAL MATHEMATICS 2009 - CIRCLES IN OUR DAILY LIFE
CHUAH KHOY YAN
Introduction
Circles are geometric figures whose points all lie the same distance from a given point, the circle's center. They are not polygons, because they are not made up of segments. Points that lie in the same line, like those in a segment, are never equidistant (an equal distance) from a single point. A circle is a simple shape of Euclidean geometry consisting of those points in a plane which are the same distance from a given point called the centre. The common distance of the points of a circle from its center is called its radius. Circles are simple closed curves which divide the plane into two regions, an interior and an exterior. In everyday use, the term "circle" may be used interchangeably to refer to either the boundary of the figure (known as the perimeter) or to the whole figure including its interior. However, in strict technical usage, "circle" refers to the perimeter while the interior of the circle is called a disk. The circumference of a circle is the perimeter of the circle (especially when referring to its length). A circle is a special ellipse in which the two foci are coincident. Circles are conic sections attained when a right circular cone is intersected with a plane perpendicular to the axis of the cone.
FURTHER TERMINOLOGY
The diameter of a circle is the length of a line segment