Angles in Circles
Angles within a circle are feasible to create with the help of different properties of the circle such as radii, tangents, and chords. The radius is the distance from the center of the circle to the circumference of the circle. A tangent is a line made perpendicular to the radius through its endpoint placed on the circle as well as the line drawn at right angles to a tangent across the point of contact when the circle passes through the center of the circle. The chord is a line segment with its endpoints on the circle. A secant line or secant is the infinite extension of the chord.
Arcs in Circles
A circular arc is the arc of a circle formed by two distinct points. It is a section or segment of the circumference of a circle. A straight line passing through the center connecting the two distinct ends of the arc is termed a semi-circular arc.
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The diagram of the triangle is,
The sum of the angles of the triangle is equal to 180 degrees.
The expression for the sum of the angle of the triangle ABC,
The sum of the angle of θ and x is 180 degrees from the given triangle.
The expression of the triangle to determine the angle x is,
Hence the value of angle x is 122°.
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