Mathematics, 11.10.2021 05:10 cruzsuarezjanca

Which of the following is not always true for adjacent angles? * ( )a) They have a common arm.
b) They have a common vertex.
c) Their sum is 180°.
d) Their other two arms lie on the opposite side of the common arm.

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Which of the following is not always true for adjacent angles? * ( )a) They have a common arm.