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Geometry 9 Online
OpenStudy (anonymous):

Help please Quick! ASAP!

OpenStudy (anonymous):

ganeshie8 (ganeshie8):

use the formula :- angle between chords = average of intercepted arcs

ganeshie8 (ganeshie8):

90 = (43+XY)/2

OpenStudy (anonymous):

Which is?

ganeshie8 (ganeshie8):

solve XY

OpenStudy (anonymous):

Uhhh

OpenStudy (anonymous):

Still don't get you

ganeshie8 (ganeshie8):

90 = (43+XY)/2

ganeshie8 (ganeshie8):

multiply 2 both sides

ganeshie8 (ganeshie8):

180 = 43 + XY

ganeshie8 (ganeshie8):

subtract 43 both sides

ganeshie8 (ganeshie8):

180 = 43 + XY -43 -43

OpenStudy (anonymous):

137

ganeshie8 (ganeshie8):

Yes !!

OpenStudy (anonymous):

How about this one

ganeshie8 (ganeshie8):

same formula, give it a try :)

ganeshie8 (ganeshie8):

angle between chords = average of intercepted arcs

OpenStudy (anonymous):

94=46+xyz/2

ganeshie8 (ganeshie8):

to take average, just do this :- 1) add the arcs 2) divide by 2

ganeshie8 (ganeshie8):

angle between chords = (46+94)/2

ganeshie8 (ganeshie8):

simplify

OpenStudy (anonymous):

70?

ganeshie8 (ganeshie8):

thats it !

OpenStudy (anonymous):

units? Degrees?

ganeshie8 (ganeshie8):

units are always degrees, for these problems

OpenStudy (anonymous):

can you help me if i need help?

ganeshie8 (ganeshie8):

sure :)

OpenStudy (anonymous):

Intersecting chords form a pair of congruent vertical angles?

OpenStudy (anonymous):

True?

ganeshie8 (ganeshie8):

|dw:1372998462824:dw|

ganeshie8 (ganeshie8):

any two lines, when they intersect, form a pair of vertical angles

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