SB7 Transversal Angles

TOPIC: Parallel and Perpendicular Lines
SB7.1 Parallel Lines and Angle Relationships

HONORS GEOMETRY
Nov 13-14

Are you ready to take notes?

2 plain blank papers

4 different color pencils

Straightedge

Blank Papers

One paper folded in half both ways, widthwise and
long-ways, “hamburger” fold and “hot dog” fold

On the 4 corners paper, on one side, in each rectangular area,
using your straightedge and a pencil, construct 2 lines being
crossed by 1 other line. LEAVE SPACE for notes.

Transversal

Vertical Angles

Interior

Exterior

On the other side, repeat the process. LEAVE SPACE for notes.

Linear Pair

Same-Side Interior Angles
Corresponding Angles

Alternate Interior Angles

Vocabulary
Do you have these in your journal?

Today’s Vocab

❏ Transversal
❏ Corresponding angles
❏ Same-side interior angles
❏ Alternate interior angles
❏ Parallel

Past Vocab

❖ Vertical angles
❖ Vertical Angles Theorem
❖ Supplementary angles
❖ Linear pair
❖ Adjacent angles

Transversal

Line intersecting
2 or more lines

Between the lines

Also called interior

Outside the lines

Also called exterior

Vertical Angles

Pair of non-adjacent angles,

on opposite sides of a vertex.

4 pairs

Linear Pair

Pair of adjacent angles,

on the same side of a line.

Alternate Interior Angles

Pair of non-adjacent angles,

on opposite sides of the transversal,

both between 2 lines.

2 pairs

Corresponding Angles

Pair of non-adjacent angles,

on the same side of the transversal,

one outside and one between 2
lines

4 pairs

Same-Side Interior Angles

Pair of non-adjacent angles,

on the same side of the transversal,

both between 2 lines.

Also called consecutive angles.

2 pairs

​POP QUIZ TIME!

Multiple Choice

Which line is a transversal?

• line t

• line r

• line s

Multiple Choice

The angle pair are alternate interior angles?

• ∠4 and ∠3

• ∠5 and ∠3

• ∠1 and ∠3

• ∠5 and ∠6

Multiple Choice

The angle pair are corresponding angles?

• ∠6 and ∠7

• ∠6 and ∠1

• ∠1 and ∠3

• ∠5 and ∠6

Multiple Choice

The angle pair are same-side interior angles?

• ∠6 and ∠8

• ∠6 and ∠4

• ∠1 and ∠8

• ∠2 and ∠1

Multiple Choice

The angle pair are supplementary angles?

• ∠1 and ∠8

• ∠6 and ∠3

• ∠4 and ∠7

• ∠4 and ∠1

Multiple Choice

The angle pair are vertical angles?

• ∠5 and ∠4

• ∠6 and ∠1

• ∠4 and ∠7

• ∠4 and ∠1

Blank Papers
2nd paper folded in half widthwise, “hamburger” fold

Construct parallel lines cut by a transversal.
Do one side upside down.

Corresponding Angles

Alternate Interior Angles

Same-Side Interior Angles

Angles of Transversal Cutting

Parallel Lines

Use patty paper to trace an angle and compare to other angles OR use a protractor to measure the angles.

Corresponding Angles

Alternate Interior Angles

Same-Side Interior Angles

Angles of Transversal Cutting

Parallel Lines

What did you find out about alternate interior angles of parallel lines cut by a transversal?

Alternate Interior Angles

What did you find out about corresponding angles of parallel lines cut by a transversal?

Corresponding Angles

What did you find out about same-side interior angles of parallel lines cut by a transversal?

Same-side Interior Angles

​Based on what you discovered, draw this figure in your journal and label ALL angles with their measures.

​QUIZ TIME!
In Canvas,