Circle theorems, tangents, chords, and inscribed angles
Circles and trigonometry · Stage 4
Recognize the pattern
An inscribed angle is half its intercepted arc.
Useful ruleInscribed angle = ½ intercepted arc
Try it before reading the solution
An inscribed angle intercepts a 100° arc. What is the angle?
This teaching example is original and is not an official SAT question.
Reasoning
100°/2=50°.
Answer50°
03 · Next step
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Practice questions remain in English, as on the SAT.