adjacent angle

Angle sharing side

Adjacent angles share a common vertex and a common side, with their other sides on opposite sides of the shared side.

The term appears in geometry when describing angles that sit next to each other: The two adjacent angles formed by the intersecting lines are supplementary.

Adjacent angles of a parallelogram add up to 180 degrees.

Related

degree measure · transversals · parallel lines · plane · geometry · math class · measurement · mathematics · side · protractor · pairing · radians · perpendicular · line segment · bisector · Euclid · congruence · parallel

Opposites
geometric angle relationship

adjacent anglevertical angle

Angles opposite at intersection

complementary angle

Family

adjacent, angle, adjacency, adjacently, angles, angled, angling, angular, angularity

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