Basic Geometry : Right Triangles
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Example Questions
Example Question #1 : How To Find An Angle In A Right Triangle
The right triangle 
The internal angles of a triangle always add up to 180 degrees, and it was given that the triangle was right, meaning that one of the angles measures 90 degrees.
This leaves 90 degrees to split evenly between the two remaining angles as was shown in the question.
Therefore, each of the two equal angles has a measure of 45 degrees.
Example Question #1 : How To Find An Angle In A Right Triangle
What is the missing angle in this right triangle?
The angles of a triangle all add up to 
This means that 
Using the fact that 90 is half of 180, we can figure out that the missing angle, x, plus 34 adds to the remaining 90, and we can just subtract
Example Question #2 : How To Find An Angle In A Right Triangle
Solve for 
The angles of a triangle add together to 180 degrees. We already know that one of the angles is 90 degrees, so we can subtract 90 from 180: the other 2 angles have to add to 90 degrees.
We can now subtract to get x:
Example Question #521 : Triangles
Determine the missing angle in this right triangle:
The angles of a triangle always add to 180 degrees.
That means that in this case,
There are a few ways we can move on from here, but one is to simplify this equation:
Example Question #11 : How To Find An Angle In A Right Triangle
Find the measurement of 
Recall that the angles inside of a triangle must add up to 
Thus, for the triangle in question,
Example Question #12 : How To Find An Angle In A Right Triangle
Find the measurement of 
Recall that the angles inside of a triangle must add up to 
Thus, for the triangle in question,
Example Question #13 : How To Find An Angle In A Right Triangle
Find the measurement of 
Recall that the angles inside of a triangle must add up to 
Thus, for the triangle in question,
Example Question #12 : How To Find An Angle In A Right Triangle
Find the measurement of 
Recall that the angles inside of a triangle must add up to 
Thus, for the triangle in question,
Example Question #11 : How To Find An Angle In A Right Triangle
Find the measurement of 
Recall that the angles inside of a triangle must add up to 
Thus, for the triangle in question,
Example Question #14 : How To Find An Angle In A Right Triangle
Find the measurement of 
Recall that the angles inside of a triangle must add up to 
Thus, for the triangle in question,
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