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OpenStudy (anonymous):
OpenStudy (pawanyadav):
D is correct
OpenStudy (anonymous):
Can you explain?
OpenStudy (pawanyadav):
Orthocentre is the point intersection of altitude to all side from opposite vertices
OpenStudy (math&ing001):
The orthocenter is the point where all three altitudes of the triangle intersect.
An altitude is a line which passes through a vertex of the triangle and is perpendicular to the opposite side.
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OpenStudy (math&ing001):
OpenStudy (math&ing001):
Can you guess which one is correct ?
OpenStudy (anonymous):
Is it D?
OpenStudy (math&ing001):
Nope, perpendicular bisector looks like this:
|dw:1448305449225:dw|
OpenStudy (anonymous):
C?
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OpenStudy (math&ing001):
|dw:1448305587426:dw| You can see that it doesn't necessarily passes through a vertex of the triangle ABC.
OpenStudy (anonymous):
Is it C?
OpenStudy (math&ing001):
Nope, did you get what a triangle altitude is ?
OpenStudy (anonymous):
not really. :(
OpenStudy (math&ing001):
Ok here's an example. I want you to draw the altitude that passes through the vertex A. I'll help you through it |dw:1448305886597:dw|
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OpenStudy (anonymous):
|dw:1448305935452:dw|
OpenStudy (anonymous):
?
OpenStudy (math&ing001):
|dw:1448305978499:dw| AE must be perpendicular to BC.
OpenStudy (math&ing001):
|dw:1448306082937:dw| Here try again :)
OpenStudy (anonymous):
Would that make it B?
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