# Parallel Lines What do you mean parallel Parallel

• Slides: 37

Parallel Lines What do you mean parallel? Parallel means ‘neverbyintersects’. Lines are parallel if they are always the same distance apart and will never meet. Parallel lines have equal distance between them at every point on the lines.

Parallel Lines Checking Parallel Lines Using Ruler Example 1 A C 2. 5 mm B D

Parallel Lines Checking Parallel Lines Using Ruler Example 1 A DC is parallel to AB C 2. 5 mm DC ll AB 2. 5 mm B D

Parallel Lines Checking Parallel Lines Using Ruler Example 2 A B D C 2 mm

Parallel Lines Checking Parallel Lines Using Ruler Example 2 DC is parallel to AB A B DC ll AB D C 2 mm

Parallel Lines Checking Parallel Lines Using Set-square Example 1 A C Slide the set-square but hold the ruler. B D If the side of the setsquare has the same angle with CD,

Parallel Lines Checking Parallel Lines Using Set-square Example 1 A C If the side of the setsquare has the same angle with CD, DC is parallel to AB. DC ll AB B D

Parallel Lines Checking Parallel Lines Using Set-square Example 2 A If the side of the setsquare has the same angle with CD, C Slide the set-square but hold the ruler. B D

Parallel Lines Checking Parallel Lines Using Set-square Example 2 A If the side of the setsquare has the same angle with CD, C DC is parallel to AB. DC ll AB B D

Parallel Lines Checking Parallel Lines Example 1 CL is parallel to AF Is AF II CL? A C F L YES CL ll AF

Parallel Lines Checking Parallel Lines Example 2 Is RB II CM? YES R C CM is parallel to BR. CM ll BR B M

Parallel Lines Checking Parallel Lines Example 3 Is EF II ON? EF is parallel to ON EF ll ON YES E F O N

Parallel Lines Checking Parallel Lines Example 4 Is AB II CD? A C NO B D

Parallel Lines Checking Parallel Lines Example 5 F Is EF II On? NO E N O

Parallel Lines Checking Parallel Lines Example 6 Is EF II ON? NO E F O N

Parallel Lines Name the pairs of parallel lines. Example 1 E F C D

Parallel Lines Name the pairs of parallel lines. Example 2 A B X Y

Parallel Lines Name the pairs of parallel lines. Example 3 E D C

Paraller Name the pairs of parallel lines. Example 4 L M A B E F D X C Y N O

Parallel Lines Drawing Parallel Lines Using Set-Square and Ruler Example 1 Step 1: Draw a line along one side of the setsquare.

Parallel Lines Drawing Parallel Lines Using Set-Square and Ruler Example 1 Step 2: Place a ruler along the other side of the set-square. Then slide the set-square.

Parallel Lines Drawing Parallel Lines Using Set-Square and Ruler Example 1 Step 3: Draw a line along the side of the setsquare.

Parallel Lines Drawing Parallel Lines Using Set-Square and Ruler Example 2 Step 1: Draw a line along one side of the setsquare.

Parallel Lines Drawing Parallel Lines Using Set-Square and Ruler Example 2 Step 2: Place a ruler along the other side of the set-square. Then slide the set-square.

Parallel Lines Drawing Parallel Lines Using Set-Square and Ruler Example 2 Step 3: Draw a line along the side of the setsquare.

Parallel Lines Draw a line parallel to the line AB Example 1 A B anywhere

Parallel Lines Example 1 reminder Draw a line parallel to the line AB A anywhere wrong way – putting first the ruler. B

Parallel Lines Draw a line parallel to the line AB Example 1 A anywhere Put first the setsquare. B

Parallel Lines Draw a line parallel to the line AB Example 2 A B anywhere

Parallel Lines 1 Example 1 Draw a line parallel to the line AB through the point C A anywhere . C B

Parallel Lines Example 2 Draw a line parallel to the line AB through the point R A B anywhere . R

Parallel Lines Example 3 Draw a line parallel to the line AB through the point X anywhere B A . X

Perpendicular Reminders Align properly the line and the side of the set-square. A B

Perpendicular Reminders Align properly the line and the side of the set-square. A B

Perpendicular Reminders Align properly the line and the side of the set-square. A B

Perpendicular Reminders Align properly the ruler and the side of the setsquare. A B

Perpendicular Reminders Protractor can be used also as a guide. A B