For number one
S: supplement.
R: angle1+angle8 =18
#2
S: supplement
R: angle 3+ angle 6=180
If a diameter intersects a chord of a circle at a perpendicular then the chord is bisected.
<h3>What is the relation between the chord and diameter of a circle?</h3>
- The segments of a circle whose endpoints are on its perimeter are called chords.
- A circle's diameter is the chord that passes across its center.
- The circle's longest chord equals its diameter.
- Any line that is perpendicular to a chord on the circle cuts it in half and goes through the center.
The solution to the problem:
A circle's chord is intersected perpendicularly by its diameter, which also passes through the center of the circle. The chord and diameter are perpendicular. Any line that is perpendicular to a chord on the circle and passes through its center divides it. The chord is divided equally by the diameter.
Therefore, the chord is bisected.
Learn more about diameter and chord at: brainly.com/question/12934647
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