#1**+6 **

The Answer must be 4, as the top of the line with the question mark is half of the side with length 8.

1/2 x 8 =4

Hope that helps!!! :)

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IhaveOBJD Feb 4, 2021

#2**+1 **

Let A be the top left vertex of the figure

B =the bottom left vertex of the figure

C = the bottom right vertex

D = top right vertex

E = the intersection of the diagonals

FE = the height we are looking for

Note that triangle ABE is similar to triangle CDE

So the altitude of ABE to the altitude of CDE =12 : 8

Therefore BF = (12)/ (12 + 8) BC = (12/20) BC

So FC = (8/20) BC

And triangle ABC is similar to triangle EFC

So

AB / BC = EF /FC

12 / BC = EF / FC

12/ BC = EF / [( 8/20) BC]

12 = EF / (8/20)

12 (8/20) = EF

96/20 = EF = 24/5 = 4.8 = ?

CPhill Feb 4, 2021

#3**+6 **

Oh. I get your reasoning but like-

The top of the line with a question mark should be half of the line with 8 centimetres which means it's 4?

That's what I see-

So could you please explain what I did wrong?

IhaveOBJD
Feb 4, 2021