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Intersecting and parallel lines. Intersecting lines are lines that cross each other.

Intersecting and parallel lines. Intersecting lines are lines that cross each other. Parallel lines are lines that never cross each other - they keep the same distance apart from each other - forever. Alternate angles Alternate angles form Z shape angles in the parallel lines.

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Intersecting and parallel lines. Intersecting lines are lines that cross each other.

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  1. Intersecting and parallel lines. Intersecting lines are lines that cross each other. Parallel lines are lines that never cross each other - they keep the same distance apart from each other - forever.

  2. Alternate angles Alternate angles form Z shape angles in the parallel lines. Alternate angles are equal to each other

  3. Corresponding angles form F or shape angles in the parallel lines. Corresponding Angles Corresponding angles are equal.

  4. 120 138 c d

  5. 55 x y z 115 r t s

  6. Allied Angles Allied / interior angles form C shape angles in the parallel lines. Allied angles are supplementary, they add up to 180 degrees.

  7. 135 a 48 b d c

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