Question 1:AE= 3cm, EF = 5cm；; Let AE=x, then EF = 8-x, AE=4, ∠ A = 90, ∴ x=3, ∴AE="3" cm, EF="5" cm.
Problem 2: solution: as shown in figure 1, ∫∠mfe = 90,
Question 1:A
Question 1:C
Question 1:A
Question 1:B
Question 1: According to him, he died of a heart attack in Japan on 1985, so the description
The boundary of the largest area is r = 2, m = 0, and the inner boundary of the right-angle sector is BC, AC, ∠ CoA = 45?
Take any point P (red) in the quadrangl