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medians

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Maths 1999-01-11
Stephane Roissard pose la question :
Soit ABC un triangle dans lequel les trois médianes sont de meme longueur. Montrer que ce triangle est quilatéral.
Jack LeSage lui répond.
A triangle with two equal medians 2009-12-19
Nazrul pose la question :
If two medians of a triangle are equal , how can I prove that the triangle is isosceles.
Chris Fisher lui répond.
The three medians of a triangle 2009-11-18
Nazrul pose la question :
If the three medians of a triangle are equal, how can I prove (without using the property that the three medians of a triangle cut one another at a point of trisection) that the triangle is equilateral.
Chris Fisher lui répond.
The intersection of the medians 2008-08-18
Katie pose la question :
Q: A Triangle is positioned with one side on the x-axis, the coordinates for the triangle are (-a,0), (a,0), (b,c)

a) Find the coordinates of the point of intersection of the perpendicular bisectors of the sides
b) Find the coordinates of the point of intersection of the medians
c) Find the coordinates of the point of intersection of the altitudes

Penny Nom lui répond.
A problem concerning the medians of a triangle 2007-08-01
leeja pose la question :
In a triangle ABC the sides BC and AC are given. It is also known that the medians to these sides are perpendicular to each other. Calculate the length of AB in terms of the other two given sides.
Chris Fisher lui répond.
Upper Quartiles 2007-01-26
Jamie pose la question :
I see you have a question about Q3 with even numbers but what about odd numbers? I have a problem with 19 numbers 36,45,49,53,55,56,59,61,62,65,67,70,75,81,82,86,89,94,99. Is there anyway the answer could be 81.5 because every time I do it I get 82 and my teacher tells me that is wrong. So in conclusion how do you do it?
Penny Nom lui répond.
Where do the medians of a triangle meet? 2007-01-02
Brittany pose la question :
Where do the medians of a triangle meet?
1. Inside the triangle
v 2. On the traingle
3. Outside the traingle

Stephen La Rocque lui répond.
The point where all the medians meet 2004-02-25
A student pose la question :
What's the name of the point where all the medians meet?
Penny Nom lui répond.
Collinear Points 2003-01-13
Gary pose la question :

Which of the 4 points are collinear when you construct the following concurrent lines or rays of a triangle?

  1. P(1), the point where the angle bisectors intersect.
  2. P(2), the point where the altitudes (or extensions) intersect (inside or outside of the triangle).
  3. P(3), the point where the medians intersect.
  4. P(4), the point where the perpendicular bisectors (or extensions) of the three sides of a triangle intersect.


This is for my 9-12 high school class in geometry.
My name is Gary


Thanks for your help.
Gary


Harley Weston and Chris Fisher lui répond.
Mean and median 2003-01-04
Jan pose la question :

I have a question re: mean and median. I know what the difference is but just need some clarification on when you would use the mean and when you would use the median. Isn't it the case that with a skewed distribution the average (mean) would be higher or lower than the median, but with a normal distribution they would be very similar values?

If you have any examples to help explain this that would be greatly appreciated.

I am a teacher (of sorts!) and the person who is asking me the question is actually my boss!


Penny Nom lui répond.
Prove that the medians of triangle PQR meet in a central point G. 2001-11-11
Jessica pose la question :
Use a scalene triancle with one point (0,b) on the y axis, another point (2c, 0) on the x-axis and the last point, (2a,0) on the x-axis. Prove that the medians of triangle PQR meet in a central point G.
Penny Nom lui répond.
Concurrent Lines in a Triangle 1998-08-10
Chris Woolf pose la question :
The question is Name four types of concurrent lines, rays, or segments that are associated with triangles.
Chris Fisher lui répond.
 
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