Lines and Angles

Lines

Horizontal A line going ro side to side

Vertical A line going from top to bottom

Oblique 2 diagonal lines crossing oblique line (1)

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Related Lines

Parallel lines two lines side by side that never intersect Parallel Line

Perpendicular Lines are perpendicular lines if the are 90 degrees from each other. Perpendicular Line

More On lines , A Line segment Line Segment

Ray Ray

Angles An Angle is when two lines meet

Reflex >180°- <360° Reflex Angle

Acute less than 90° Acute Angle

Right 90° Right Angle

Obtuse >90-<180 Obtuse Angle

Straight 180° Straight Angle

Arms are connected to the vertex

A vertex is a point between 2 arms

A complementary angle are 2 angles that at up to 90 degrees

A supplementary angle is when 2 angles add up 2 180 degrees

When two lines cross each other, the opposite angles are equal

when three lines meet at one point, the angles they make add up to 360 degrees