Write definations of
1.congruent circles
2. concentric circles
3. touching circles
4.intersecting circles
5. tangent
6.secant
and also draw figures. please answer it fast it too urgent. right answer will be marked as brainlist.
Answers
Step-by-step explanation:
Congruent circles
Two circles are congruent if they have the same size. The size can be measured as the radius, diameter or circumference. They can overlap.
concentric circles
Concentric circles are circles with a common center. The region between two concentric circles of different radii is called an annulus. Any two circles can be made concentric by inversion by picking the inversion center as one of the limiting points.
touching circles
If the sum of the radii and the distance between the centres are equal, then the circles touch externally. ... If the difference between the radii and the distance between the centres are equal, then the circles touch internally.
intersecting circles
Two circles may intersect in two imaginary points, a single degenerate point, or two distinct points. The intersections of two circles determine a line known as the radical line.
tangent
a line or a plane that touches a curve or a surface at a point so that it is closer to the curve in the vicinity of the point than any other line or plane drawn through the point. Trigonometry. (in a right triangle) the ratio of the side opposite a given angle to the side adjacent to the angle.
secant
secant. [ sē′kănt′ ] A straight line or ray that intersects a curve, especially a circle, at two or more points. The ratio of the length of the hypotenuse in a right triangle to the side adjacent to an acute angle. The secant is the inverse of the cosine.