Engineering Board Exam Reviewer · Circles: Arcs and Angles · medium
Two chords intersect inside a circle. One of the angles they form and its vertical angle intercept arcs of 70° and 110°. Find the measure of that angle.
- 180°
- 40°
- 90°
- 70°
Answer
C. 90°
Solution
The angle formed by two chords is half the sum of the intercepted arcs: 70°+110°/2=90°.
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