since the 5 is a negative you are actually subtracting it from 3
so 3 +(-5) is actually 3-5. which = -2
97.8-63.65
97.80
-63.65
-----------
34.15
The right angle triangles are:
Triangle A has two acute angles and one ninety degree angle
Triangle d has two acute angles and one ninety degree angle.
<h3>What are right triangles?</h3>
A triangle is a three-sided polygon with three edges and three vertices. the sum of angles in a triangle is 180 degrees. A right angled triangle is a triangle in which one of its angles measure 90 degrees.
To learn more about triangles, please check: brainly.com/question/22949981
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