maths question
2009-11-09 1:56 am
An isosceles triangle ABC. AB = AC. Angle BAC = 20 degrees. AB there is one point on the line D, then the angle DCB = 50 degrees. There is one point on the AC line E, then the angle EBC = 60 degrees. DE connected by a straight line. DC, and BE intersect at F. find angle DEB. how 2 do???
回答 (1)
2009-11-18 8:50 pm
✔ 最佳答案
your grammar are wrong, i dont understand...
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