To see if it's a right triangle we need to determine if a²+b²=c²
(

)² + (

)² =


+

=


+

=


=

So it is a right triangle
You can use number patterns to find the LCM of 120 and 360 by multiplying 120 by 1,2,3,4,5,6,and so on and do the same with 360 until you find the least number that they have in common.
Answer:
<m is equal to the measure of <Z
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