A sociologist wants to study the attitudes of American male college students toward marriage and husband-wife relationships. She gives a questionnaire to 25 of the men enrolled in Sociology 101 at her college. Twenty of the 25 men complete and return the questionnaire. The sample in this situation is: all the men in the Sociology 101 class. the 25 men who received the questionnaire. all American male college students. the 20 men who completed and returned their questionnaire. O O O
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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