Question 76938
<pre><font size = 5><b>
Classify each triangle by its angles. 
1. 20°,70°,90° = 

That's a right triangle because it has a 90° angle


2. 13°,27°,140° =

That's an obtuse scalene triangle because it has an
angle larger than 90°.  It is scalene because none of the
angles are equal. 


3. 46°,4°,86° =

That's an acute triangle because all three of its
angles are less than 90°.  It is also scalene because
none of the angles are equal.

Edwin</pre>