- ACommon vertex and one common arm
- BEqual measures
- CSum equal to 90°
- DBoth must be obtuse
Step-by-Step Solution
Adjacent angles must share a vertex and one arm, with non-common arms on opposite sides.
Answer: A) Common vertex and one common arm
Which condition is required for two angles to be called adjacent?
Class 7Adjacent and Vertically Opposite AnglesLines and Angles
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