Posted by joyce on Sunday, April 3, 2011 at 2:09pm.
if an angle has 40DEGREES and 80 dgrees what is the missing number?

math  Brittany, Sunday, April 3, 2011 at 3:47pm
Umm I think Its 60, if I know what you mean, if its a triangle. ( learned that if you press alt and 0176, it will give you the degree sign.
A triangle is 180°.
You take 40+80, and get 120.
So then you take 180120, and get 60°.

math  Anonymous, Sunday, April 3, 2011 at 4:18pm
If your figure is triangle sum of angles must be 180°
40°+80°+x=180°
120°+x=180°
x=180°120°
x=60°
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