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May 14th, 2019, 02:12 AM   #1
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Triangle's area which is in a trapezoid

The are of the trapezoid is 234. Can you help me find the area of the darker triangle?
Attached Images IMG_20190514_120539.jpg (89.6 KB, 4 views)

Last edited by skipjack; May 14th, 2019 at 05:21 AM. May 14th, 2019, 05:25 AM #2 Global Moderator   Joined: Dec 2006 Posts: 20,937 Thanks: 2210 Area($\small\triangle$BCE) = Area($\small\triangle$BCD)/2 and Area($\small\triangle$ADE) = Area($\small\triangle$ADB)/2. $\therefore$ Area($\small\triangle$BCE) + Area($\small\triangle$BCD) = Area(ABCD)/2, and so Area($\small\triangle$ABE) = Area(ABCD)/2 = 117. Tags area, trapezoid, triangle Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Threads Thread Thread Starter Forum Replies Last Post Seventy7 Geometry 7 March 29th, 2017 10:42 AM coder Calculus 3 July 23rd, 2015 11:09 AM Opposite Geometry 3 December 11th, 2014 04:17 AM nemsest Calculus 5 March 19th, 2013 05:05 AM Spaghett Algebra 4 June 18th, 2011 10:24 PM

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