Geometry of Straight Lines

If we measure the angle size of a straight line (flat surface), what would it be?

•  $90\degree$  

•  $180\degree$  

•  $270\degree$  

•  $360\degree$  

What is the size of the given angle?

• $90\degree$

• $180\degree$

• $270\degree$

• $360\degree$

What will the angles around a point ALWAYS add up to?

• $90\degree$

• $180\degree$

• $270\degree$

• $360\degree$

Which of the following shows that VERTICALLY OPPOSITE angles are equal?

• 
• 
• 
• 

If we divide a straight line into two equal angles, what would each angle's size be?

• $90\degree$

• $180\degree$

• $270\degree$

• $360\degree$

Determine the value of x

•  $60\degree$  

•  $120\degree$  

•  $240\degree$  

•  $360\degree$  

Determine the value of x

• $60\degree$

• $70\degree$

• $80\degree$

• $90\degree$

The given lines are called:

• Oblique lines

• Equal lines

• Perpendicular lines

• Parallel lines

The given lines are called:

• Oblique lines

• Equal lines

• Perpendicular lines

• Parallel lines

Determine the unknown value:

• $40\degree$

• $50\degree$

• $45\degree$

• $130\degree$