
1) x=9, because we can use the Pythagorean theorem, x^2 + 144 = 225, x^2 = 81
2)
, because 6^2 +6^2 = 72, 
3)
, because 
hope this helps... load for images!
Answer:
should be D if these aren't correct for you come back and I can give information
Explanation:
Silicon is a chemical element with the symbol Si and atomic number 14.
The given angles sum to less than 90°, so the remaining angle must be more than 90°. (The total of all angles is 180°.) Triangle ABC has an angle greater than 90°, so is obtuse. Since the triangles are similar, their corresponding angles are congruent. Hence ...
.. D. Triangle XYZ is obtuse.
Answer:
just don't want to be a good person
please mark me as brainliest