Let ABCD is a square. Two points E, F are chosen on respective sides BC, CD. If EF = BE + FD. What is the EAF degree?

Giúp mình trong 10 phút nhé, cho minmhf kết quả trước, lời giải để sau.

Let ABCD be the square with the side length 56cm. If E and F lie on CD, BC respectively such that CF = 14cm and EAF = 45o then CE = ........cm.

Let ABCD be the square with the side length 56cm. If E and F lie on CD, C respectively such that CF = 14cm and EAF = 45^o then CE = ........cm.

A trapezuim ABCD has two parallel sides AB and CD. The diagonals AC and BD intersect at E. If the areas of triangle CDE and CDB are 1 and 4 respectively, what is the area of the trapezuim ABCD

A trapezuim ABCD has two parallel sides AB and CD. The diagonals AC and BD intersect at E. If the areas of triangle CDE and CDB are 1 and 4 respectively, what is the area of the trapezuim ABCD 

The figure below shows a square ABCD of side 6 cm. Given that E is the midpoint of AB, points F and G are on BC so that BF = FG = GC. What is the total area of the shaded region in cm2?

Cho hình vuông ABCD. Hai điểm E và F được đặt lần lượt tren 2 cạnh BC và CD. Nếu EF = BE + FD, tìm số đo \(\widehat{EAF}\)

ABCD is a square,AB=a,AC intersects BC at O. M and N are points on the line segments BC anh DC respectively satisfying that MON=45.Then BMxDN=....a^2

ABCD is a square,AB=a,ac intersects BC at O. M and N are points on the line segments BC anh DC respectively satisfying that MON=45.Then BMxDN=....a^2