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start wid finding y
am guessing you meant X ? do i do 2x times 3x+2
The sum of all the angle sin the pentagon is 540. so, 4y+4y+(3y+11)+103+(4y-9)=540. solve for y to get the measure of y in degrees. since EDH is a straight line. find the measure of angleCDH. and then angle DCG can be found.
i dont get it at all
i got 29 for y
am not sure what to do afer i got y
check again, y = 29 is wrong
actually i am wrong, y = 29 is correct
hahaha lol i dont know what to do after that though
Next, find \(\angle EDC\)
EDC = 4y - 9 = 4(29) - 9 = 107
ohhhhhh i doubled it i though it was marking half stupid mistake ? :/ now i dont know what to do wit that number
look at the pic
CDH and EDC are forming a straight line, eh ?
they care the same aren't they?
nope, they add up to 180
CDH + 107 = 180
CDH = 73
Now the last step
look at the right quadrilateral, how many angles u knw in it ?
1 the 74 right ?
just now we found CDH
and the H has a little square.
dont ignore a little square
so, we knw 3 angles in it already. can we find GCD ?
i believe so i just did 360 -74-73-90
Excellent ! 123 is correct !!
ca you help me with one more these are the most confusing things i have ever seen in geometry
this is going to be easy :p
use this : sum of exterior angles in a polygon add up to 360