Joined: 12 Jul 2007
[, given: 0] 0
what is the perimeter of tri PQR 1) measurements of angles [
21 Jan 2008, 09:19
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what is the perimeter of tri PQR 1) measurements of angles PQR, QRP, RPQ are x deg, 2x deg, 3x deg respectively 2) altitude of tri PQR from Q to PR is 4. OA is C, but I don't get it.
Joined: 14 Oct 2007
[, given: 0] 8
1) tells u only angles - insuff.
2) tells u the "height" (if the traingle is draw with Q at the top) from 1 you can see that angles form a 30-60-90 triangle i.e a right triangle. and from 2 it shows that PQ is 4. so since its a triangle with ratios 1:sqrt(3):2 perimeter can be calculated so ans = C