Eight-grade geometric mathematics problems - Training Enrollment Network

Eight-grade geometric mathematics problems

According to the meaning of the question, we can know: △ ABF △ AEF.

∴AE=AB= 10,BF=EF

AC = 6

According to Pythagorean Theorem CE=8

∴DE=2

Let DF=x

Then EF=BF=6-x

∴(6-x)？ =2? +x？

The solution is x=8/3.

∴△△ the area of def = 1/2*2*8/3=8/3cm?

Related articles

Anhui Suzhou senior high school entrance examination results announcement time

The math problems that Xiaoshengchu can't solve are urgent ~ ~ ~

Definition of rectangle in primary school mathematics

[China Southern Airlines Postgraduate Entrance Examination] The discrete mathematics and compilation principle of the re-examination are not as good as that of the re-examination ...

Test 8 1 and explain how to achieve 79 points.

Mathematics and finance ppt

The sixth grade elementary school mathematics exercise book the first equation problem (not a thinking question)

How to do the first volume of the second grade mathematics handwritten newspaper

Fifth grade seedling cup simulation volume (urgent)

Marking time of Zaozhuang senior high school entrance examination