Chapter 3: Parallel and Perpendicular Lines

Slides:



Advertisements
Similar presentations
Chapter 3.2 Notes: Use Parallel Lines and Transversals
Advertisements

PARALLEL LINES AND TRANSVERSALS. CORRESPONDING ANGLES POSTULATE Two lines cut by a transversal are parallel if and only if the pairs of corresponding.
Geometry vocabulary Mr. Dorn. Corresponding Angles Postulate If two parallel lines are cut by a transversal, then each pair of corresponding angles is.
Use Parallel Lines and Transversals
Parallel Lines and Transversals
Lesson 3-4 Proving lines parallel,. Postulates and Theorems Postulate 3-4 – If two lines in a plane are cut by a transversal so that corresponding angles.
Table of Contents page 7: 3-5 Proving Lines Parallel page 8: 3-5 Practice.
3.2 Properties of Parallel Lines Objectives: TSW … Use the properties of parallel lines cut by a transversal to determine angles measures. Use algebra.
1 Angles and Parallel Lines. 2 Transversal Definition: A line that intersects two or more lines in a plane at different points is called a transversal.
1 Lines Part 3 How to Prove Lines Parallel. Review Types of Lines –Parallel –Perpendicular –Skew Types of Angles –Corresponding –Alternate Interior –Alternate.
Angles and Parallel Lines
3.3 Proving Lines Parallel Converse of the Corresponding Angles Postulate –If two lines and a transversal form corresponding angles that are congruent,
Proving Lines Parallel Section 3-5. Postulate 3.4 If 2 lines are cut by a transversal so that corresponding angles are congruent, then the lines are parallel.
Lesson 2-5: Proving Lines Parallel 1 Lesson Proving Lines Parallel.
Geometry Section 3.2 Use Parallel Lines and Transversals.
PARALLEL LINES AND TRANSVERSALS SECTIONS
3-3 Proving Lines Parallel
Angle Relationships. Vocabulary Transversal: a line that intersects two or more lines at different points. Transversal: a line that intersects two or.
Lesson 3-2 Angles and Parallel Lines. Ohio Content Standards:
Section 3-3 Parallel Lines and Transversals. Properties of Parallel Lines.
IDENTIFY PAIRS OF LINES AND ANGLES SECTION
3.2: Properties of Parallel Lines 1. Today’s Objectives  Understand theorems about parallel lines  Use properties of parallel lines to find angle measurements.
3.4 Proving Lines Parallel Converse of 3.3. Theorems to find Parallel lines If two lines are cut by a transversal and corresponding angle are congruent,
3-2 Properties of Parallel Lines. 2) Postulate 10: Corresponding Angles Postulate If two parallel lines are cut by a transversal then the pairs of corresponding.
Chapter 3 Section 3.1 & 3.2 Identify pairs of lines and angles and use parallel lines with transversals Objective: SWBAT identify angle pairs formed by.
Geometry Notes Sections .
3.2- Angles formed by parallel lines and transversals
PROPERTIES OF PARALLEL LINES POSTULATE
Proving Lines are Parallel
3.3 Parallel Lines and Transversals
3.4 Proving that Lines are Parallel
Proving Lines are Parallel
BELL RINGER Lines q, r, and s are distinct in a plane. If line q is perpendicular to line r, and line r is perpendicular to s, then which of following.
Parallel Lines and Transversals
Properties of Parallel Lines
Use Parallel Lines and Transversals
Proving Lines Parallel
Proving Lines Parallel
Proving Lines Parallel
Proving Lines Parallel
Parallel Lines and Angles
Chapter 3.2 Notes: Use Parallel Lines and Transversals
Lesson 3 – 2 Angles and Parallel Lines
3.5 Properties of Parallel Lines
Warm Up #3 9/14 Given m<1 = 7x-24 m<2 = 5x+14
Proving Lines Parallel
Parallel Lines and a Transversal Line
Parallel Lines and a Transversal Line
3.2- Angles formed by parallel lines and transversals
Lesson 3.2 Use Parallel Lines and Transversals
Use Parallel Lines and Transversals
3-2 Properties of Parallel Lines
Proving Lines Parallel
3-5 Proving Lines Parallel
Parallel Lines and Transversals
Module 14: Lesson 3 Proving Lines are Parallel
Properties of parallel Lines
Parallel Lines and Transversals
3-2 Angles and Parallel Lines
Proving Lines Parallel
Proving Lines Parallel
Proving Lines Parallel
3-2 Proving Lines Parallel
Parallel Lines and Transversals
3.2 Parallel Lines and Transversals …..
Proving Lines Parallel
Do Now.
3.2 Notes: Use Parallel Lines and Transversals
Parallel lines & algebra
Angles and Parallel Lines
Presentation transcript:

Chapter 3: Parallel and Perpendicular Lines Lesson 2: Angles and Parallel Lines

If two parallel lines are cut by a transversal, then… (see graphic organizer) the alternate interior angles are congruent the consecutive interior angles are supplementary the alternate exterior angles are congruent the corresponding angles are congruent In a plane, if a line is perpendicular to one of the two parallel lines, then it is also perpendicular to the other line.

Examples A. In the figure, m11 = 51. Find m15. Tell which postulates (or theorems) you used. B. In the figure, m11 = 51. Find m16. Tell which postulates (or theorems) you used.

Examples A. In the figure, a || b and m20 = 142. Find m22. B. In the figure, a || b and m20 = 142. Find m23.

Examples A. ALGEBRA If m5 = 2x – 10, and m7 = x + 15, find x. B. ALGEBRA If m4 = 4(y – 25), and m8 = 4y, find y.

Examples ALGEBRA If m1 = 9x + 6, m2 = 2(5x – 3), and m3 = 5y + 14, find x. B. ALGEBRA If m1 = 9x + 6, m2 = 2(5x – 3), and m3 = 5y + 14, find y.

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com Inc. All rights reserved.