Need help to solve some math problem (planim

tiigrike

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Oct 30, 2011
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12
Maybe someone can help me

1) is the median of a triangle at any point that divides the medians in the ratio 1:3, think from the top. These points are the vertices of a triangle. Many times the area of ​​the triangle below the original surface area of ​​a triangle?

2) a rectangular trapezoid is drawn in a circle. Located in the center of this circle trapezoid snapping endpoints of 2 cm and 4 cm. Find area of ​​a trapezoid.

3) Construct a circle with a radius of 13 cm, and the circle is the point M, which is located 5 cm from the center of the circle. Through the point M is drawn chord AB = 25 cm. How to point M divides the chord?

4) rectangle drawn around the circle has a diameter of one of the diagonal of the rectangle. Prove that opposite sides of a rectangle, the diagonals are equal to the other projections.

Thanks a lot, when somebody can help me!
 
2) a rectangular trapezoid is drawn in a circle. Located in the center of this circle trapezoid snapping endpoints of 2 cm and 4 cm. Find area of ​​a trapezoid.

Apparently, English is not your native tongue. That's OK, but I want to try and understand what you're getting at. What does "circle trapezoid snapping endpoints" mean?.

3) Construct a circle with a radius of 13 cm, and the circle is the point M, which is located 5 cm from the center of the circle. Through the point M is drawn chord AB = 25 cm. How to point M divides the chord?

You appear to have a circle with radius 13 cm. A point M located 5 cm from the center. A chord of length 25 cm goes through point M. What is it you need to find?. "How to point M divides the chord" makes no sense. Can you try to rephrase it?.
 
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