Posted by Twg on Wednesday, August 19, 2009 at 5:35pm.
See if you can figure it out after studying this site.
http://www.mathsrevision.net/gcse/pages.php?page=17
All 4 of them have to add up to 360º
so far you have 3x87 or 261º
So how big is the fourth angle ?
If a quadrilateral has two 75 angles and 110 angles what measure is remaining angle
If a quadrilateral has two 75 angles and 110 angles what measure is remaining angle
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