Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

I got here a presentation more or less we come a proving and derivation of ratio and proportion... let say..an isoseles triangle ABC where C in vertical that is perpendiular to point E ( base mid of AB) , WHOSE ALTItude is 30cm, at angle B has a slant line whose distance is 20 perpndicular to point D (mid of Slope /line AC) angle ABD.(small triangle) i pressume angle A would be the base angle of the triangle.

here are the ratio and proportion;

30/AE =20/AD; AD/AE =20/30 =2/3 AD=2AE/3...................1. of course we believe this Phytagorean theorem; angle ABD; [AB]^2=20^2 + [AD]^2..........2.

tan A =30/EB (angle ABD) =30/AE (angle AED); hence: 30/EB= 30/AE; AE/EB=1; AE=EB ..(as a proof , u can see that if you draw the triangle) also we have this arrangement of triangle ABC.. AB= AE +EB; AB=2AE................3.