1 Arc of a circle is part of its circumference
2 Both circles are concentric if they have the same centre
3 Circumference of a circle is 2*pi*radius or pi*dianeter
4 Diameter cuts through a circle's centre and is its longest chord
5 Exact value of pi is not known
6 Four right angles can be found in a circle
7 Gross surface area of a circle is pi*radius2
8 Half a circle is a semi-circle
9 Just an estimate is usually used for the value of pi
10 Knowledge of a circle's properties and features were known by the ancients
11 Inner circumference is less than its outer circumference
12 Like dimensional circles are congruent
13 Motors cars and machinery depend on a circle to move and operate
14 No computer has ever worked out a circle's circumference/diameter
15 One rotation of a circle goes through 360 degrees
16 Perpendicular lines are formed when its diameters meet at right angles
17 Quadrilaterals and their 4 sides have cyclic properties within a circle
18 Radius is 1/2 of a circle's diameter
19 Sectors and segments are found within a circle
20 Tangent is an outside straight line that touches a circle at 1 point
21 Unlimited lines of symmetry
22 Vertex of a circle doesn't exist
23 Wheels are a circle's best friend because they have so much in common
24 X as a letter fits perfectly into a circle creating 4 sectors
25 Yo-yo is a circular device that rolls up and down on a string
26 Zero coordinates of (0, 0) can be the centre of a circle on the Cartesian plane
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2.6 = 26/10 or 13/5 in fraction2.6 = 26/10 or 13/5 in fraction
Since z = a^2/z on the circle, we see that w as given by (1) is purely real on the circle C and therefore if* = 0. Thus C is a streamline. If the point z is outside 0, the point az /z is inside 0, and vice-versa. Since all the singularities off(z) are by hypothesis exterior to C, all the singularities off(a?/z) are interior to C ; in particular f(a z /z) has no singularity at infinity, since f(z) has none at z = 0. Thus w has exactly the same singularities as/(z) and so all the conditions are satisfied.
Can be centred anywhere. The circle x^2 + y^2 = z^2 is centred at the origin. X, y & z do not require to be different.
It is 21/26.
z=e^(2 times pi times i times t) If t goes from 0 to 1, then you get the unit circle.