Which of the following is the converse of the statement: All right angles measure 90°?
1) If an angle is a right angle, then its measure is 90°.
2) If an angle is not a right angle, then its measure is not 90°.
3) If an angle has a measure of 90°, then it is a right angle.
4) If an angle does not have a measure of 90°, then it is not a right angle.