Parallel Lines & Transversals: Converse and the Real World

Have you watched the 3.3 Presentation?

• Yes AND I took notes!

• Yes BUT I did not take notes.

• Well... I had it on but I was "multitasking."

• Not yet BUT I will before I take the quiz.

When they have the correct mathematical relationship, which of the following angle relationships can prove that lines are parallel?

• Linear Pair

• Alternate Interior Angles

• Same Side Interior Angles

• Vertical Angles

When they have the correct mathematical relationship, which of the following angle relationships can prove that lines are parallel?

• Same Side Exterior Angles

• Alternate Exterior Angles

• Corresponding Angles

• Transversal Angles

When are all 3 Unit 3 Quizzes due?

• Wednesday by 11:55pm

• Wait... I already did a Unit 3 Quiz!

• We have Quizzes in Geometry???

Which TWO angle relationships CANNOT prove that lines are parallel?

• Vertical Angles

• Linear Pair

• Corresponding Angles

• Alternate Interior Angles

What value does x need to be to prove that line a and line c are parallel?

• 41; x is congruent to the 41 degree angle.

• 41; x is supplementary to the 41 degree angle.

• 139, x is congruent to the 41 degree angle.

• 139, x is supplementary to the 41 degree angle.

What value does y need to be to prove that line b and line c are parallel?

• 41; y is congruent to the 41 degree angle.

• 41; y is supplementary to the 41 degree angle.

• 139, y is congruent to the 41 degree angle.

• 139, y is supplementary to the 41 degree angle.

If x and y are supplementary, what does that prove?

• Line a and Line b are parallel

• Line a and Line c are parallel.

• Line b and Line c are parallel.

• Nothing. Their supplementary relationship does not prove parallel lines.

If x and z are supplementary, what does that prove?

• Line a and Line b are parallel

• Line a and Line c are parallel.

• Line b and Line c are parallel.

• Nothing. Their supplementary relationship does not prove parallel lines.

What mathematical relationship would y and z have to have in order to prove that Line a and Line b are parallel?

• Congruent

• Supplementary

• They cannot prove that Line a and Line b are parallel.