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Geo 1.5 Measuring and constructing Angles Video 5

Added Sep 15, 2015 •

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okay I'm going to go ahead and do number 8 with you guys then you guys are going to do number 9 on your own and check your work so number eight same thing we're using make the logician postulate we're going to write it out in letters first so angle Klan Plus angle app nlm equals angle KLM In-N-Out sorry that kind of squished almost came with the edge and then it gives us to bring really important fact KLM is a straight angle what does a straight angle equal  hopefully you guys said a hundred and eighty degrees so I'm going to substitute the pieces of information that I know I know that kln is 10 X -5 plus nlm is 4 x + 3 + KLM is straight angle which is  180 that was an ugly 8 that's okay go ahead and come by and like terms 10 x + 4X is 14 x -5 + 3 is -2 bad to both sides 14 x equals 182 I don't know that one search YouTube birthday 13 equals X  k but that's what we were looking for we were looking for kln and mnlm so we have to plug 13 back in  turn * 13 - 5  130 - 5 is 125 for angle kln and then the other one is four times * 13 + 3  and that is going to give you 55 alright you guys go turn and do the next problem all Posite will show you my work in a minute so posit and then when most the class is done plus play the see what the answer is alright there's the answer go ahead and check your work Posite here if you guys need more time to check I'm going to go ahead and move on your next one is a construction of bisecting angles but like I said we're going to do construction later next week so go ahead and hold off on that one for a second but I do want to talk about angle bisector which is right here angle bisector Cuts an angle in half so just like a segment bisector cut a segment in half now we have an angle bisector that cuts in England and when Tuesday when something is cut in half it is cut into two equal pieces so this piece right here equals this side over here which is why they Chad one Ark  example 5 in our last example for today that we will be doing in class it says cute as bisects pqr so I'm going to draw angle pqr Arrow Arrow  p  QR remember that vertex is always in the middle and it says cute ass by makes it so that means that there is Psalm online like this new ass  that cuts of these two in half  and then it says angle angle p shoe whats is 24  find the measure of pqr so find the measure of the whole thing if pqs is 24 what does that mean sqr is  24 atom together and that will give you angle pqr equals 24 + 24 equals  48 degrees  see you tomorrow have a wonderful Wednesday and these and these will be up online forever so you guys can walk in as many times as you want just because you love hearing how wonderful my voice is by guys have a good day

Uploaded by Lauren Stouffer.

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Geo 1.5 Measuring and constructing Angles Video 5

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