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Mathematics 4 Online
OpenStudy (anonymous):

Measure of arc ac?

OpenStudy (anonymous):

|dw:1395106979334:dw|

OpenStudy (fibonaccichick666):

What is the measure of angle ABC?

OpenStudy (anonymous):

It would be 90 degree angle as well because its a straight line (even though i didnt draw that very straight)

OpenStudy (fibonaccichick666):

ok, and what is the measure of angle DBE?

OpenStudy (anonymous):

90 degrees as well

OpenStudy (fibonaccichick666):

So, if two arcs are subtended by the same measure angle, the arcs are ___________

OpenStudy (anonymous):

would the arc then be 180?

OpenStudy (fibonaccichick666):

no, not quite. let's look at it this way. Howmany degrees are in a circle?

OpenStudy (anonymous):

360

OpenStudy (fibonaccichick666):

ok and 90 is what fraction of 360?

OpenStudy (anonymous):

1/4?

OpenStudy (fibonaccichick666):

yea, so that means that the circle is divided into 4 _____ parts

OpenStudy (fibonaccichick666):

sot the arca are all the same _______

OpenStudy (anonymous):

so the arc =45?

OpenStudy (anonymous):

not 45 *42*

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