Parallel Lines and Proofs

If ∠9 ≅ ∠12, then ________.

• line a is parallel to line b

• line d is parallel to line c

• none of the lines can be determined to be parallel.

• line a is parallel to line d

• line c is parallel to line b

If ∠9 ≅ ∠12, which of the following can be used to prove lines are parallel?

• Corresponding Angles Converse

• Alternate Interior Angles Converse

• Alternate Exterior Angles Converse

• Interiors on Same Side Converse

• None of the above can be used

If ∠5 ≅ ∠10, then ________.

• line b is parallel to line a

• line c is parallel to line a

• line b is parallel to line d

• line c is parallel to line d

• Cannot determine 2 lines to be parallel.

If m∠5=65˚ and m∠9=115˚, which of the following can be used to prove lines are parallel?

• Corresponding Angles Converse

• Alternate Interior Angles Converse

• Alternate Exterior Angles Converse

• Interiors on Same Side Converse

• None of the above can be used

If ∠1 ≅ ∠8, then ________.

• line b is parallel to line a

• line c is parallel to line a

• line b is parallel to line d

• line c is parallel to line d

• Cannot determine 2 lines to be parallel.

If ∠1 ≅ ∠8, which of the following can be used to prove lines are parallel?

• Corresponding Angles Converse

• Alternate Interior Angles Converse

• Alternate Exterior Angles Converse

• Interiors on Same Side Converse

• None of the above can be used

If ∠11 ≅ ∠7, then ________.

• line b is parallel to line a

• line c is parallel to line a

• line b is parallel to line d

• line c is parallel to line d

• Cannot determine 2 lines to be parallel.

If ∠11 ≅ ∠7, which of the following can be used to prove lines are parallel?

• Corresponding Angles Converse

• Alternate Interior Angles Converse

• Alternate Exterior Angles Converse

• Interiors on Same Side Converse

• None of the above can be used

Determine which lines, if any, must be parallel.

• None of the lines are parallel.

Determine which lines, if any, must be parallel.

• None of the lines are parallel.