The angle formed by an arc at the centre of a circle is 72 degrees. The angle formed by the same arc at the circumference is:

Question

anonymous · Answer

what? can you draw it

anonymous · Answer

the answer in the book is 36 degrees

anonymous · Answer

Oh. I misread the question. This is an inscribed angle.

anonymous · Answer

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x is 72

anonymous · Answer

so which angle is the one formed by an arc at the centre of of the circle.

anonymous · Answer

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See? There are two angles.
"The angle formed by an arc at the centre of a circle is 72 degrees."
THis says that the arc of the central angle is 72º.
"The angle formed by the same arc at the circumference is"
THis says what is the measure of the inscribed angle if the arc of the inscribed angle is 72º?

anonymous · Answer

oh that's what it looks like thx :D

anonymous · Answer

what about this question:
The angle formed by an arc at the circumference of a circle is 64 degrees. Another angle on the same arc at the circumference, in the same segment, is: