Which conditional has the same truth value as its converse? If a figure is a square, then it has four sides. If x = 7, then |x| = 7. If x – 17 = 4, then x = 21. If an angle has a measure of 80°, then it is acute.

Question

Which conditional has the same truth value as its converse?  	 	If a figure is a square, then it has four sides. 	If x = 7, then |x| = 7. 	If x – 17 = 4, then x = 21. 	If an angle has a measure of 80°, then it is acute.

anonymous · Answer

Try inverting the statements:
If a figure has four sides, is it then always a square?
If |x| = 7, is x always 7?
If x=21, then is x - 17 = 4?
If an angle is acute, does its angle always have a measure of 80 degrees?