Title Notes 3.1 Lines and Angles

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3.1 Identify Pairs of Lines and Angles

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Presentation transcript:

Warm Up Wednesday 10/10 page 143 #1—5, 9—12 4 minutes then proceed through PPT

Title Notes 3.1 Lines and Angles Please take out your handout and record the notes Title Notes 3.1 Lines and Angles 10/8/13

Transversals A transversal is a line that intersects two coplanar lines at two different points. Transversal b, intersects lines a and c. m l Transversal m, intersects lines l and k. b k a c

Special Angles Pairs formed by a Transversal 2 1 3 Interior Angles are formed inside lines r & s: ∠3, ∠4, ∠5 𝑎𝑛𝑑 ∠6 4 r 5 6 s 8 7 Exterior Angles are formed outside lines r & s: ∠1, ∠2, ∠7 𝑎𝑛𝑑 ∠8 Corresponding Angles: ∠1 & ∠5 , ∠6 & ∠2, ∠4 & ∠____ 8 , ∠7 & ∠3 Consecutive (Same Side) Angles: Angle pairs that lie in the same relative position on both intersections 3 ∠4 & ∠5 ,∠6 & ∠____ Alternate Interior Angles: ∠4 & ∠6 , ∠5 & ∠_____ 3 Interior angle pairs that lie on the same side of the transversal. Alternate Exterior Angles: Interior angle pairs that lie on opposite sides of the transversal. , ∠2 & ∠_____ 8 ∠7 & ∠1 Exterior angle pairs that lie on opposite sides of the transversal.

End Slide Show

Assignment 42 On your Geometry Tools (continued…) record the terms from p. 146: Parallel lines, Perpendicular lines, Skew lines, and Parallel planes On a separate paper, Pg. 148 #6—13 (you MUST draw the pictures)

Special Angles Pairs formed by a Transversal 2 1 3 Interior Angles are formed inside lines r & s: ∠3, ∠4, ∠5 𝑎𝑛𝑑 ∠6 4 r 5 6 s 8 7 Exterior Angles are formed outside lines r & s: ∠1, ∠2, ∠7 𝑎𝑛𝑑 ∠8 Corresponding Angles: ∠1 & ∠5 , ∠6 & ∠2, ∠4 & ∠____ 8 , ∠7 & ∠3 Consecutive (Same Side) Angles: 3 ∠4 & ∠5 ,∠6 & ∠____ Alternate Interior Angles: ∠4 & ∠6 , ∠5 & ∠_____ 3 Alternate Exterior Angles: , ∠2 & ∠_____ 8 ∠7 & ∠1

End of Slideshow 10/10

Transversals A transversal is ___________________________ _______________________________________ m l b k a c

Special Angles Pairs formed by a Transversal k Corresponding Angles: Consecutive Angles (Same Side): Alternate Interior Angles: Alternate Exterior Angles: Corresponding Angles: Consecutive Angles (Same Side): Alternate Interior Angles: Alternate Exterior Angles: