Foreverisabell
How to do this? Please help!
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Foreverisabell
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roberman228
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what do you need to know how to do
Foreverisabell
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the value of x @roberman228
Foreverisabell
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there is a picture attached above @roberman228
ZeHanz
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It is an equilateral triangle. What can you say about the two other angles of the triangle?
roberman228
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x=45
ZeHanz
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No, could you answer my question, please?
Foreverisabell
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What?
Foreverisabell
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that they are equal, so x equals 45?
roberman228
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zehan mention me in your ? and i'll come to it
Foreverisabell
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wait no, cause x is equall to the opposite inner angles? so x = 80?
ZeHanz
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Both angles in the triangle are equal. Sum of all angles in a triangle is how many degrees?
roberman228
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exactly, x=80
Foreverisabell
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180. @ZeHanz
ZeHanz
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@Foreverisabell: so what is left for the two equal angles?
Foreverisabell
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Im still confused.
Foreverisabell
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all the angles have to equal 180 inside no?
ZeHanz
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Sum of angles is 180. One angle is 40. Sum of other two angles is 140.
The other two angles are equal, so 70 degrees each.
Foreverisabell
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Oh alright thank you.
Foreverisabell
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So that means x = 70 + 40?
ZeHanz
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Yes! See, it is not that hard...
Foreverisabell
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can you help me with one more thing?
Foreverisabell
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ZeHanz
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Sure!
Foreverisabell
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I attached the picture.
ZeHanz
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I can see it ;)
If P is a centroid, then P divides QT into two pieces, QP and PT, with
QP:PT =2:1
Now you know the length of QP (=14), so what would be the length of PT?
Foreverisabell
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14 + 14? zoo. 28?
Foreverisabell
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*sooo
ZeHanz
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No, QP:PT=2:1, so QP is double the length of PT, so PT would be 7.
So total 14+7=21
Foreverisabell
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oh okay now I get it.