Proving Lines Parallel
Move the slider so that line g and line h are parallel.
How do you know that the two lines will be parallel?
Corresponding angles should be congruent for lines g and h to be parallel.
Move the slider so that lines g and h become parallel.
How do you know that the two lines are parallel?
Lines g and h are parallel because same side (consecutive) exterior angles are supplementary.
Move the slider so that lines f and h become parallel.
How do you know that lines f and h are parallel?
Alternate interior angles are congruent.
Move the slider so that lines f and h become parallel.
How do know that lines f and h will be parallel?
Alternate exterior angles should be congruent when lines f and h become parallel.
Move the slider so that lines g and h become parallel.
How do you know that lines g and h are parallel?
Lines g and h are parallel because same side (consecutive) interior angles are supplementary.
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Information: Proving Lines Parallel