the measure of the inscribed angle is______ its corresponding central angle
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the measure of a minor arc equals the measure of the central angle that intercepts it.
there are 180 degrees in a striaght line
30
Use a protractor.
To measure an angle: # Align the bottom line of the protractor with one ray of the angle being measured. # Center the central point along the bottom of the protractor with the junction of the angle being measured. # Find where the other ray of the angle crosses the rounded part of the protractor. The numbered mark at which it crosses is the number of degrees of the angle being measured.