Question

what is the relationship between a radius and a chord it bisects? a. the radius is perpendicular to the chord. b. the radius is equal to the chord. c. the radius does not intersect the chord. d. the radius is parallel to the chord. what do you call a line that touches a circle at exactly one point? a. diameter b. tangent c. radius d. chord what is the measure of an angle inscribed in a semi - circle? a. 60° b. 45° c. 180° d. 90°

Explanation:

1. Recall the circle - chord property: A radius that bisects a chord is perpendicular to the chord. This is a fundamental geometric property of circles.
2. Recall the definition of a tangent: A tangent to a circle is a line that touches the circle at exactly one point.
3. Recall the inscribed - angle theorem for a semi - circle: The measure of an inscribed angle in a semi - circle is 90 degrees.

Answer:

1. a. The radius is perpendicular to the chord.
2. b. Tangent
3. d. 90°