Included angle and a centerline angle

1. What is the difference between an included angle and a centerline angle?

2. What does TPI stand for in relation to tapers?

3. What are the TPI and TPF of a part with end diameters of 3/4″ and 1/2″ and a taper length of 4.25″?

4. What are the corresponding centerline and included angles to 5/8″ TPF?

5. What is the corresponding centerline angle of a part with TPI of 0.070″? Round your answer to the nearest minute.

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