| D. Ponton - Mathematics - 1927 - 168 pages
...contains two right angles. A Plane Figure is any portion of a plane surface bounded by one or more lines. **A Circle is a plane figure contained by one line,...point within the figure to the circumference are equal** to one another. This point is called the Centre of the Circle, and the straight line drawn from the... | |
| English literature - 1838 - 596 pages
...property for an axiom ? Will Mr Whewell reason as follows? — ' A circle ' is defined by Euclid to be " **a plane figure contained by one ' line, which is called...drawn from a certain point within the figure to the** circumfe' rence, are equal to one another." How does it appear that ' any line can have such a character... | |
| Science - 1906 - 600 pages
...circle is a plane figure contained by one line, which is called the circumference and is such that all **lines drawn from a certain point within the figure to the circumference are equal** to one another: 16. And this point is called the center of the circle. It is evident that in the first... | |
| R. H. Warn, John G. Horner - Crafts & Hobbies - 2002 - 292 pages
...extremity of anything. 11. A figure is that Fig. 3. which is enclosed by one or more boundaries. 12. **A. circle is a plane figure contained by one line,...point within the figure to the circumference are equal** (Fig. 4). 13. And this point is called the centre of the circle (Fig. 4,0). 14. A diameter of a circle... | |
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