Determine the shape of the triangle if its two angles are 55 and 36 degrees.

The angles in a triangle add up to 180 degrees.
We subtract from it two known angles:
180 – 55 – 36 = 125 – 36 = 89 degrees is the value of the third angle.
Now we see that the triangle has no right angle (90 degree angle) and no obtuse angle (angle greater than 90 degrees).
All corners of the triangle are sharp.
So this triangle is sharp.
Answer: sharp.



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