jazy
The figure below shows a partially completed construction of an obtuse isosceles triangle. Points P and L represent two vertices of the triangle.
Where should the point for the third vertex lie?
between O and L and on the arc
between O and L and beyond the arc
between O and M and beyond the arc
between O and M and on the arc
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jazy
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jazy
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I forgot the steps to do this :/
ganeshie8
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whats obtuse
whats isosceles
?
ganeshie8
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one is angle classification, and the other is side classification, right
jazy
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Isoscolese triangle has 2 congruent sides.
Obtuse angle is < 90 degrees
jazy
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Obtuse angle is greater than 90 degrees
ganeshie8
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thats right !
ganeshie8
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lets see hw to construct it
ganeshie8
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look at the pix, already they plotted two vertices of trianlge, P and L
ganeshie8
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question is asking to find where the 3rd vertex of triangle goes
ganeshie8
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|dw:1348081096179:dw|
ganeshie8
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|dw:1348081153595:dw|
jazy
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For it to be obtuse the point would have to be in between O and M right?
ganeshie8
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you're correct ! between O and M and on arc
ganeshie8
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yep
jazy
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Oh! Okay, the drawing helps a lot(: Thanks!
ganeshie8
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and for it to be isosceles, it has to be on arc
ganeshie8
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|dw:1348081265981:dw|
ganeshie8
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cuz, those two ticked sides form radius of semicircle... which are always equal
jazy
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Well that explains the arc(: Thank you
ganeshie8
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np :D