Final Answer:
Line → top picture (blue, with arrows on both ends)
Line segment → second picture (purple, with dots on both ends)
Ray → third picture (orange, with one dot and one arrow)
Parallel lines → fourth picture (green, two lines going same direction, never meet)
Perpendicular lines → fifth picture (black, cross at right angle)
Intersecting lines (not parallel or perpendicular) → sixth picture (pink, cross but not at 90 degrees)
Right angle → seventh picture (gray, looks like corner of a square)
Acute angle → eighth picture (brown, small open angle)
Obtuse angle → ninth picture (red, wide open angle)
Straight angle → tenth picture (dark brown, flat line with arrow on one end)
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Parent Tip: Review the logic above to help your child master the concept of angles and lines worksheet.