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Entrance & Exit Slip
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Mr. Math Blog 12.4 (6:01)
Go Math 12.4 Jeffrey Parks (14:12)
NUMBER ROCK - Perpendicular, Parallel, & Intersecting Song (2:18)
Identifying Perpendicular, Parallel, & Intersecting Lines (2:45)
Parallel, Perpendicular, and Intersecting lines (Mr.Nussbaum)
Lines, Angles, and a City Grid (Mr.Nussbaum)
Parallel, Perpendicular, Intersecting (MathGames)
Parallel, Perpendicular, Intersecting Quiz (Turtle Diary)