ABCDEF is a regular hexagon, prove that AB+AC+AD+AE+AF=3AD
sneha sunil raikar , 15 Years ago
Grade 12
7 Answers
AskiitianExpert Shine
Last Activity: 15 Years ago
Hi Divide the hexagon into 4 triangles by joining AC, AD, AE . Considering triangle ACD, v get AD= AC + CD for Tri ADE , AD= AE + ED Add the two eq=> 2AD= AC + CD + AE + ED Now, AF = CD, because its a regular hexagon, therefore it has equal and parallel opposide sides. Similarly , ED= AB Substitute in the eq : 2AD= AB+ AC + AE + AF Add one more AD both the sides and v get the desired result.
Krishna Deepakrao Kulkarni
Last Activity: 15 Years ago
From vector properties, AB=ED, AE+AB=AD, ...(1) Similarly, AF=CD, AC+AF=AD ...(2) From (1), (2) AF+AC+AD+AE+AB=AD+AD+AD=3AD
Surendra Pandey
Last Activity: 8 Years ago
Here,To prove: AB+AC+AD+AE+AF=3ADNow,, LHS= AB+AC+AD+AE+AF = AB+AE+AC+AF+AD = AE+ED+AC+CD+AD ( opposite sides of regular hexagon are equal So AB=ED & AF=CD ) = AD+AD+AD =3AD #proved =
parth
Last Activity: 8 Years ago
given: ABCDEF is a regular hexagon with center O.AB+AC+AD+AE+AF=AB+(AC+AF)+AD+AE=AB+(AC+CD)+AD+AE [since AF=CD]=AB+AD+AD+AE=2AD+(AB+AE)=2AD+(ED+AE) [since AB=ED=2AD+AD=3AD=3*(2AO) [since O is the center and AO=OD=6AOhope this helps you
nithin
Last Activity: 7 Years ago
AB+AC+AD+AE+AF
=(AB+AE)+(AC+AF)+AD
=AD+AD+AD+=3AD=3(2AO)=6AO
therefore,AB+AC+AD+AE+AF=3(2AD)=6AO.
Vaibhav Dhoran
Last Activity: 6 Years ago
As we know all side of the regular hexagon are equal
AB+AC+AD+AE+AF=3ADNow,, LHS= AB+AC+AD+AE+AF = AB+AE+AC+AF+AD = AE+ED+AC+CD+AD ( opposite sides of regular hexagon are equal So AB=ED & AF=CD ) = AD+AD+AD =3AD #prove
Ajeet Tiwari
Last Activity: 4 Years ago
Hello students Divide thehexagoninto 4 triangles by joiningAC,AD,AE. Now,AF= CD, because its aregular hexagon, therefore it has equal and parallel opposide sides. Add one moreADboth the sides and v get the desired result. therefore,AB+AC+AD+AE+AF=3(2AD)=6AO.
Hope it helps thankyou
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