The believe the answer is C but I could be wrong, good luck!
well ik the angle of 1 and 2 are right angles and number 4 is 180° but I'm not sure ab number 2 sorry i.d.k if I helped someone might be able to explain better and help
Answer:
A
Step-by-step explanation:
Answer:
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Step-by-step explanation:
Answer:
If the lines that forms < X are perpendicular, it can be assumed that it is a right angle.
Step-by-step explanation:
An indirect proof of an angle is an assumption about the value of the angle that can be made by mere inspection and some considerations.
< X = right angle = 
A right angle is one that is equal to
. As an indirect proof, if the lines that forms the angle are perpendicular; then it can be assumed to be a right angle. Because perpendicular lines are at right angle to one another.