Question

definition of adjacent angles collinear and non collinear & perpendicular lines​

Answer 1

Adjacent angles are two angles that have a common vertex and a common side.

Three or more points , , , ..., are said to be collinear if they lie on a single straight line .

Noncollinear. Points that do not all lie on a single line.

In elementary geometry, the property of being perpendicular is the relationship between two lines which meet at a right angle.

Answer 2

Adjacent angles: two angles which have a common arm

Collinear lines: two or more lines which are a part of a bigger line. Basically they overlap each other..kinda

Non collinear: lines which aren't collinear

Perpendicular lines: lines which intersect each other and make an angle of 90°