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Mathematics 20 Online
OpenStudy (anonymous):

What is the approximate area of ΔGHI below

OpenStudy (anonymous):

OpenStudy (anonymous):

2.83 3.83 4.83 5.83

OpenStudy (butterflydreamer):

follow a similar pattern to your other question :) Draw a line down the center. http://prntscr.com/74cw90

OpenStudy (anonymous):

i need help babe

OpenStudy (butterflydreamer):

alright, first step is to find the length of the red line. Let's call the length of red line = x You need to use pythagoras' theorem for this :) http://prntscr.com/74cyuo

OpenStudy (butterflydreamer):

now that we know what x equals to, so you want to find the area of the triangle: Area of triangle = 1/2 * base * height Area of triangle = 1/2 * 2 * x we know x = 2 sqrt 2 Therefore plug x back into the above area of triangle and we get: Area of triangle = (1/2) * 2 * (2 sqrt 2) = ?

OpenStudy (butterflydreamer):

are you confused?

OpenStudy (anonymous):

huh

OpenStudy (solomonzelman):

ok, lets start from here. Do you know anything about a triangle that has the following angles 30\(^\circ\) 60\(^\circ\) 90\(^\circ\) ??

OpenStudy (solomonzelman):

there is a rule (for any 30\(^\circ\), 60\(^\circ\), 90\(^\circ\), triangle) |dw:1431436968504:dw|

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