The sixth grade first semester people's education press exercise book mathematics question 64 pages Today! The efficiency of the drug
It's basic training!
Mathematics wisdom garden 9:12:14
① Fill in the blanks
Less than 1, more than 1, equal to 1
twenty-five
9:5
7:6
5:7
Exercise book math problems people's Education Press
There is a point P on the BC side of a 12cm square piece of paper ABCD, Pb = 5cm. If the paper is folded so that point a falls on point P, try to find the length of the crease
Connect PA and make NQ perpendicular to AB and point Q
BP=5,AB=12
AP=13
fold
AP is perpendicular to nm
Easy to prove triangle ABP complete
Equal to triangle nqm
MN=AP=13
That is, the length of crease is 13cm
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Four typos
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