Geometry problem?

Question

ok what is the defination of Angle,Diametrer,Radious my sis asks me but I forgot the defination.

Answer 1

Diameter - the length of any straight line which passes through the centre of a circle and touches the circle at only two points on opposite side of the circle.

Radius - the radius is the length of any straight line which connects the centre point of a circle with the circle itself at any one point.

Angle - is that space/area (between touching lines/objects) measured at the intersection of any two lines/objects

Answer 2

1-An angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle. Angles provide a means of expressing the difference in slope between two rays meeting at a vertex without the need to explicitly define the slopes of the two rays. Angles are studied in geometry and trigonometry.

2-In geometry, a diameter (Greek words diairo = divide and metro = measure) of a circle is any straight line segment that passes through the center and whose endpoints are on the circular boundary, or, in more modern usage, the length of such a line segment. When using the word in the more modern sense, one speaks of the diameter rather than a diameter, because all diameters of a circle have the same length. This length is twice the radius. The diameter of a circle is also the longest chord that the circle has.
The diameter of a connected graph is the distance between the two vertices which are furthest from each other. The distance between two vertices a and b is the length of the shortest path connecting them

3-In classical geometry, a radius of a circle or sphere is any line segment from its center to its boundary. By extension, the radius of a circle or sphere is the length of any such segment. The radius is half the diameter. In science and engineering the term radius of curvature is commonly used as a synonym for radius.

More generally—in geometry, engineering, graph theory, and many other contexts—the radius of something (e.g., a cylinder, a polygon, a graph, or a mechanical part) is the distance from its center or axis of symmetry to its outermost points. In this case, the radius may be more than half the diameter.

Answer 3

angle is the space swept by a line segment moving from the original position with respect to one of its end points
1. Mathematics
a. The figure formed by two lines diverging from a common point.
b. The figure formed by two planes diverging from a common line.
c. The rotation required to superimpose either of two such lines or planes on the other.
d. The space between such lines or surfaces.
e. A solid angle.

diameter is the line segment from a point on the circumference of a circle to another through the centre of the circle

radius is the line segment joining the centre of a circle to any point on the circumference

Answer 4

Angle: the union of two rays {its sides} that have the same endpoimt {its vertex}.
Diameter: a segment connecting two points on the circle or sphere and containing the center of the circle or sphere,also,the length of that segment.
Radious: a segment connecting the center of a circle or a sphere with a point on that circle or sphere,also,the length of that segment.