Question

Two angles are adjacent if

they have the same vertex

they have a common arm

their non-common arms are on either side of the common arm.

all of above

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Answer 1

Answer:

all of the above

same vertex defines same as the line divided by a arm to form angle

they have a common arm as the vertex is same

their non common arm are on the opposite side of the common arm

^_^

Answer 2

Answer:

supplementry angle

are complementary angle. Adjacent Angles: When two angles have a common arm and common vertex and their non-common arm are the either side of common arm, then they are called adjacent angles.