Complete Warm-Up! Only things on desk: – Pencil – Handouts you picked up Be silent & work independently on the Warm Up Problems (#1 – 9)

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Presentation transcript:

Complete Warm-Up! Only things on desk: – Pencil – Handouts you picked up Be silent & work independently on the Warm Up Problems (#1 – 9)

always never always sometimes To meet, touch, go/cut through, cross, etc.

no yesat point M Yes at point R no

DOC CAM! Can they lie in the same plane?

We will be able to: - Name and describe the 4 different types of lines Agenda: - Warm up - 4 types of lines - Lines and Plans examples -Problem Set -Exit Ticket Homework: Problem set

Intervention! 4:30 Must have test corrections done Assignments are on the board we are going to study for the retake

2 Lines are described as… Intersecting Non- Intersecting ObliquePerpendicularParallelSkew

With your group, use the provided examples & non-examples to complete the table. Type of LinesCharacteristicsPicture OBLIQUE PERPENDICULAR SYMBOL: PARALLEL SYMBOL: SKEW Think about which are coplanar and which are not

Intersecting Oblique Lines Intersect to form acute or obtuse angles

Perpendicular Lines Intersect to form a right angle Symbol: Example: j l j l “Line j is perpendicular to line l” “Look for the box in a picture!

Parallel Lines A B m n C D “Line AB is parallel to line CD” “Look for the double arrow in a picture!

Skew Lines NEVER intersect Non-Coplanar A B m n C D m and n are skew a and b are skew

Example 1: Think of the sides in the figure as planes. DOC CAM!

Example 2: YOUR TURN! Plane CDEF

Example 3: Think of the sides of a figure as planes.

What is the best description of the horizontal bars in the photo? A.INTERSECTING B.PERPENDICULAR C.SKEW D.PARALLEL

Is the platform perpendicular, parallel, or skew to the ground?

Is the arm perpendicular, parallel, or skew to a telephone pole?

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