Draw perpendicular lines

Can you find any perpendicular lines? B E C F D M N P Q

The intersection point ( ) is called ( ). Line ( ) and ( ) intersects at right angles, so line ( ) and ( ) is ( ). We can say: line ( ) is perpendicular to ( ), write as: ( )⊥( ). Or ( ), write as:( ). The intersection point ( ) is called ( ). A B E C F D M N P Q

To learn drawing 1. Drawing Tools: set square and pencil

To learn drawing 2. Key : pinpoint the right angle and right angle sides

Right angle Right angle side Right angle side Right angle Right angle side Right angle side

Draw the perpendicular line CD to line AB, foot of perpendicular is O AB⊥CD

. . Draw the perpendicular line EF to line AB through point O AB⊥EF E

. Draw the perpendicular line MN to line AB through point P AB⊥MN M P

Draw line segment AB perpendicular of two parallel lines AB⊥a or AB⊥b

Perpendicular line segments are always the same length. Draw line segment AB perpendicular of two parallel lines D C B A F E b a AB⊥a , CD⊥a , EF⊥a AB = CD = EF Perpendicular line segments are always the same length.

Do Exercises

Thank you!

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