Explain with suitable diagrams:
(a) Circle
Answers
Answer:
a circle which does have any sides and angles
Answer:
Circle Definition
A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called “centre”. Every line that passes through the circle forms the line of reflection symmetry. Also, it has rotational symmetry around the centre for every angle. The circle formula in the plane is given as:
(x-h)2 + (y-k)2 = r2
where (x,y) are the coordinate points
(h,k) is the coordinate of the centre of a circle
and r is the radius of a circle.
How to Draw a Circle?
In maths projects for class 10 on circles, the construction of a circle, all the properties and terminologies are explained in detail. To understand what circles are in simple terms, go through circles for class 10, and also try the following exercise –
Circles
Take an empty sheet of paper and mark a single point on the sheet, somewhere in the middle of the sheet, and name it to point O.
Select a random length for radius, for example, 3 cm.
Using a ruler, keep the reference zero mark on point O and randomly mark 3 cm away from point O in all the direction.
Mark as many points as you want away from point O, but all of them should be exactly 3 cm away from point O.
If you’ve selected sufficient points, you may notice that the shape is starting to resemble a circle and this is exactly what the definition of a circle is.