Perpendicular What domeans you mean by a 90
Perpendicular What domeans you mean by a 90º Perpendicular forming perpendicular? angle or right angle. Perpendicular lines are lines that What are perpendicular lines? intersect each other at a 90º angle. Perpendicular lines are lines that form a 90º angle. 1
Perpendicular Checking Perpendicular Lines Using Protractor A B C D 2
Perpendicular Checking Perpendicular Lines Using Protractor AB makes a right angle with CD. A C B AB CD D 3
Perpendicular Checking Perpendicular Lines Using Set-square Where is the right angle of the setsquare? A C B D 4
Perpendicular Checking Perpendicular Lines Using Set-square Put the two sides that form the right angle along the two lines. A C B D 5
Perpendicular Checking Perpendicular Lines Using Set-square Put the two sides AB makes a the right that form angle along the right angle two lines. with CD. A C B AB CD D 6
Perpendicular X Checking Perpendicular Lines We will check using a setsquare. Example 1 Y M Does XY make a Yes right angle with MN? XY MN N 7
Perpendicular Checking Perpendicular Lines We will Example 2 LM E Does LM make a right angle with EF? L check using a protractor. Yes EF M F 8
Perpendicular Checking Perpendicular Lines Example 3 A We will check using a setsquare. Does AB make a Yes right angle AB BC with BC? B C 9
Perpendicular Checking Perpendicular Lines Example 4 Does CD make a right angle with DE? C We will check using a protractor. NO D E 10
Perpendicular Checking Perpendicular Lines Example 5 Does CA make a right angle with DE? C D A We will check using a protractor. NO E 11
Perpendicular Checking Perpendicular Lines Example 6 A Y B Does YX make a right angle with AB? We will check using a setsquare. NO X 12
Perpendicular Name the pairs of perpendicular lines. Exercise 1 E F C D 13
Perpendicular Name the pairs of perpendicular lines. Exercise 2 A B X Y 14
Perpendicular Name the pairs of perpendicular lines. Exercise 3 E D C 15
Perpendicular Name the pairs of perpendicular lines. Exercise 4 L M A B E F D X C Y N O 16
Perpendicular Drawing perpendicular lines using protractor Example 1 Step 1. Draw a line and mark a point. Place the base line of the protractor over the line and the center at the point. . 17
Perpendicular Drawing perpendicular lines using protractor Example 1 Step 2. Mark a point at the 900 mark. . . 18
Perpendicular Drawing perpendicular lines using protractor Example 1 Step 3. Draw a line from this point to the point on the line. Mark a right angle sign to show perpendicular lines. . . 19
Perpendicular Drawing perpendicular lines using protractor Example 2 Step 1. Draw a line and mark a point. Place the base line of the protractor over the line and the center at the point. . 20
Perpendicular Drawing perpendicular lines using protractor Example 2 Step 2. Mark a point at the 900 mark. . . 21
Perpendicular Drawing perpendicular lines using protractor Example 2 Step 3. Draw a line from this point to the point on the line. Mark a right angle sign to show perpendicular lines. . . 22
Perpendicular Drawing perpendicular lines using set-square. Example 1 Step 1. Identify the right angle of the set-square and the two sides forming the right angle. 23
Perpendicular Drawing perpendicular lines using set-square. Example 1 Step 2. Draw a line and place one of these sides along the line. 24
Perpendicular Drawing perpendicular lines using set-square. Example 1 Step 2. Draw a line and place one of these sides along the line. 25
Perpendicular Drawing perpendicular lines using set-square. Example 1 Step 2. Draw a line and place one of these sides along the line. 26
Perpendicular Drawing perpendicular lines using set-square. Example 1 Step 2. Draw a line and place one of these sides along the line. 27
Perpendicular Drawing perpendicular lines using set-square. Example 1 Step 3. Draw a line along the other side and mark a right angle sign to show perpendicular lines. 28
Perpendicular Drawing perpendicular lines using set-square. Example 2 Step 1. Identify the right angle of the set-square and the two sides forming the right angle. 29
Perpendicular Drawing perpendicular lines using set-square. Example 2 Step 2. Draw a line and place one of these sides along the line. 30
Perpendicular Drawing perpendicular lines using set-square. Example 2 Step 3. Draw a line along the other side and mark a right angle sign to show perpendicular lines. 31
Perpendicular Draw a line perpendicular to the line AB Example 1 anywhere AB A B 32
Perpendicular Draw a line perpendicular to the line AB Example 2 anywhere AB B A 33
Perpendicular Draw a line perpendicular to the line AB Example 1 through the point C . A C B 34
Perpendicular Draw a line perpendicular to the line AB Example 2 through the point R R A . B 35
Perpendicular Draw a line perpendicular to the line AB Example 3 through the point E A B E . 36
Perpendicular Draw a line perpendicular to the line AB Example 4 through the point O A . O B 37
Perpendicular Reminders Align properly the line and the side of the set-square. A B 38
Perpendicular Reminders Align properly the line and the side of the set-square. A B 39
Perpendicular Reminders Align properly the line and the side of the set-square. A B 40
Perpendicular Reminders Use a ruler as your guide. A B 41
Perpendicular Reminders Use a protractor as your guide. A B 42
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