Assessment and Learning in Knowledge Spaces (ALEKS) Practice Exam

Question: 1 / 400

Which of the following defines the center of a circle?

The midpoint of the radius

A point equidistant from all points on the circle

The center of a circle is defined as a point that is equidistant from all points on the circumference of the circle. This means that if you select any point on the edge of the circle, the distance from that point to the center is the same, which is the radius of the circle. This characteristic is fundamental to the geometric definition of a circle and serves to distinguish it from other geometric shapes.

In contrast, the incorrect options highlight different aspects of circle geometry but do not accurately define the center. For instance, the midpoint of the radius does not represent a specific point related to the circle's geometric properties; rather, it is a point along the radius, which does not fulfill the requirement of being equidistant from all perimeter points. Describing the intersection of the diameter suggests a more complex relationship, as it merely refers to points along that line segment without capturing the essence of the circle's center. Similarly, the area contained within the circle pertains to the space enclosed by the circle rather than defining its central point. Thus, option B captures the correct geometric definition of the center of a circle.

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The intersection of the diameter

The area contained within the circle

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