Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**alext****Member**- Registered: 2017-05-16
- Posts: 1

In triangle ABC, the medians AD,BE, and CF concur at centroid G.

(a) Prove that AD < (AB + AC)/2.

(b) Let P=AB+AC+BC be the perimeter of triangle ABC. Prove that 3P/4 < +AD+BE+CF < P

Offline

**bob bundy****Administrator**- Registered: 2010-06-20
- Posts: 8,137

hi alext

Welcome to the forum.

Your problem has been posted before (and answered).

http://www.mathisfunforum.com/viewtopic.php?id=23062

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

Pages: **1**