TODAY IN GEOMETRY…  Warm Up: Parallel Lines Proofs  Learning Goal: 3.5 Write Equations of lines for Parallel and Perpendicular Lines  Independent Practice.

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Presentation transcript:

TODAY IN GEOMETRY…  Warm Up: Parallel Lines Proofs  Learning Goal: 3.5 Write Equations of lines for Parallel and Perpendicular Lines  Independent Practice  CH. 3 TEST-Monday/Tuesday!

WARM UP: PROVING LINES ARE PARALLEL

STATEMENTREASON 1. Given 2. Corresponding Angles Converse

STATEMENT REASON 1. Given 2. Alternate Exterior Angles Theorem 3. Transitive Property 4. Alternate Interior Angles Converse Fill in the blanks.

STATEMENT REASON 1. Given 2. Corresponding Angles Theorem 3. Transitive Property 4. Alternate Interior Angles Converse

SLOPE-INTERCEPT FORM: SLOPE Y-INTERCEPT

Writing an equation of a line from a graph

Given a graph use slope-intercept form (0, 5) y-intercept = b -8 3

Write the equations for each graph in slope-intercept form.

REVIEW: PARALLEL AND PERPENDICULAR LINES Slope for y first!

Writing an equation of a parallel line

EQUATIONS OF PARALLEL LINES: Given a point and slope. SAME SLOPE!!!!!

EQUATIONS OF PARALLEL LINES: Given a point and slope. SAME SLOPE!!!!!

EQUATIONS OF PARALLEL LINES: Given a point and slope. SAME SLOPE!!!!!

Writing an equation of a perpendicular line

EQNS OF PERPENDICULAR LINES: Given point and slope. NEGATIVE RECIPROCAL!!!!!

EQNS OF PERPENDICULAR LINES: Given point and slope. NEGATIVE RECIPROCAL!!!!!

EQNS OF PERPENDICULAR LINES: Given point and slope. NEGATIVE RECIPROCAL!!!!!

HOMEWORK #4: Pg. 184: 5-8, 10-12, 16-18, 23-25, If finished, work on other assignments: HW #1: Pg. 150: 11-15, 18-23, 24-32, HW #2: Pg. 157: 4-19, 22-24, 27-31, 33, 35, 36 Pg. 165: 3-15, 19-21, 23, 26, 27 HW #3: Pg. 175: 1-27 odd 28-30