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Mathematics 12 Online
OpenStudy (anonymous):

Name the altitude for ΔABC ( I will draw it right now)

OpenStudy (anonymous):

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Directrix (directrix):

Every triangle has 3 altitudes. Learn the Geometry definitions in addition to drawing diagrams. An altitude is a segment drawn from one of the three vertices perpendicular to the opposite side.

Directrix (directrix):

So, based on the definition of altitutde, which do you think it is?

OpenStudy (anonymous):

@Directrix i think it is AB? i thaught it was AF

OpenStudy (anonymous):

Wait i think its AF

Directrix (directrix):

It is segment AF drawn to side BC.

Directrix (directrix):

AB is a side of the triangle. An altitude can be a side of the triangle but not in this case.

OpenStudy (anonymous):

Oh okay so it is AF...thanks man, really appreciate your help

Directrix (directrix):

Happy to help.

OpenStudy (anonymous):

@Directrix also can you help me on this one...Find the center of the circle that can be circumscribed about ΔEFG with E(2, 2), F(2, -2), and G(6,-2).

OpenStudy (anonymous):

@Directrix im really having a hard time with this one

Directrix (directrix):

The point you need is called the circumcenter of the triangle. It is a point that is equidistant from all three vertices of the triangle. Circumcenter: The point where the three perpendicular bisectors of a triangle meet.

OpenStudy (anonymous):

@Directrix so how can i solve this?

OpenStudy (anonymous):

@Directrix am i supossed to graph the points?

Directrix (directrix):

Yes. Then, you will see what sort of triangle it is.

Directrix (directrix):

Look for the coordinates of the point where the hypotenuse of the triangle formed by the points intersects the x-axis.

OpenStudy (anonymous):

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