Geometry questions I don't understand. please help. :D?

Question

1). Given: Line BD is a median of triangle ABC.

AD = 2x+10.

DC = x+15.

Find the measure of line AD.

http://i37.tinypic.com/14y8jd0.jpg

2). Given: Line BD is an altitude of triangle ABC.

Find the measure of angle BDC.

http://i37.tinypic.com/116t095.jpg

3). Given line GB is a median of triangle ABC.

AG=10.

Find the measure of line GC.

http://i37.tinypic.com/116t095.jpg

4). Is Line AB a midsegment, perpendicular bisector, median or an altitude?

http://i35.tinypic.com/35cpoix.jpg

5). Is Line EG a midsegment, perpendicular bisector, median , or an altitude?

http://i35.tinypic.com/zxms68.jpg

6).

Given: DB = 7x + 2

AD = 2x + 3

RA = 6x - 5

Line BA and Line RY are medians of triangle BRD.

Solve for YD.

http://i37.tinypic.com/o8sd20.jpg

Answer 1

1) 'median' means it divides AC into 2 equal bits. Therefor, AD=DC; or 2x+10=x+15.

So x=5 and AD=20.

2) A triangle's altitude is ALWAYS perpendicular to the base it's on. So the angle is 90 degrees.

3) You gave the wrote link. I assume by the information you wrote that the answer is 20. Both sides are the same, and one of them is 10.

4) It is an altitude. It's perpendicular to the base, and goes through the angle opposite from the base.

5) Median. It divides DF into 2 equal parts.

Answer 2

ur on ur OWN!