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Mathematics 9 Online
OpenStudy (jilltalks):

Quadrilateral EFGH is inscribed inside a circle as shown below. Write a proof showing that angles H and F are supplementary. I put:Circles are three hundred sixty degrees. A quadrilateral inscribed in a circle has two pairs of opposite angles that when added together equal one hundred eighty degrees. These opposite angles are also known as supplementary angles. Is this correct?

OpenStudy (jilltalks):

help pleeeeeeease!

OpenStudy (jilltalks):

OpenStudy (jilltalks):

help please

OpenStudy (jilltalks):

help

OpenStudy (jilltalks):

this is the last question in my geometry course

OpenStudy (jilltalks):

i'm so close to finishing

OpenStudy (jilltalks):

i just need someone to double check my answer for this problem

OpenStudy (jilltalks):

pretty pretty pleeeeeeasssse someone help

OpenStudy (jilltalks):

help

OpenStudy (jilltalks):

please anyone?

OpenStudy (jilltalks):

help

OpenStudy (wolf1728):

Angles H and F are inscribed angles. http://www.1728.org/circangl.htm An inscribed angle = half of the intercepted arc. Angles H and F intercept the entire circle (360 degrees) and so half of this intercepted arc = 180 degrees.

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