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26 votes
26 votes
Please help me!

(show the solution)​

Please help me! (show the solution)​-example-1
User SixtyTonneAngel
by
2.7k points

1 Answer

6 votes
6 votes

Answer:

50°

Explanation:

Where secants meet externally, the angle at their point of intersection is half the difference of the intercepted arcs.

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vertex angle = (1/2)(140° -40°) = 1/2(100°) = 50°

The vertex angle is 50°.

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Additional comment

This is in contrast to the formula for the angle where chords cross. That is half the sum of the intercepted arcs.

Please help me! (show the solution)​-example-1
User Misternewb
by
3.1k points