Angle Relationships & Parallel Lines Mrs. Wedgwood.

Slides:

Advertisements

Similar presentations

Adjacent, Vertical, Supplementary, and Complementary Angles

Advertisements

Adjacent, Vertical, Supplementary, Complementary and Alternate, Angles.

Chapter 12 and Chapter 3 Geometry Terms.

Pre-Algebra 5.2 Parallel and Perpendicular Lines.

Pre-Algebra 5-2 Parallel and Perpendicular Lines 5-2 Parallel and Perpendicular Lines Pre-Algebra Warm Up Warm Up Problem of the Day Problem of the Day.

Lesson 9.2 Angle Relationships and Parallel Lines

Angle Relationships & Parallel Lines Pre-Algebra.

Objectives Angle Pair Relationships Adjacent Angles Vertical Angles

Using Angle Relationships

© Teacher Created Materials Determining Angle Measures when Parallel Lines Are Cut by a Transversal Today’s Lesson.

Line & Angle Recognition

Pre-Algebra Homework Page 248 #1-9. NEW! Student Learning Goal Chart Lesson Reflection for Chapter 5.

Angle Pair Relationships

Angle Relationships Geometry 1.5.

This line is called a transversal.

1.4 Pairs of Angles Adjacent angles- two angles with a common vertex and common side. (Side by side) Linear pair- a pair of adjacent angles that make a.

- is a flat surface that extends in all directions. Objective - To identify angles as vertical, adjacent, complementary and supplementary. Plane.

10-3 Angle Relationships G2:Properties of 2- dimensional figures.

& Problem Solving.  You will be able to use the converse of a theorem to construct parallel lines.  You will be able to use theorems to find the measures.

Summarizing Angles. Angles in a triangle For any triangle, a b c a + b + c = 180°

Determining Angle Measures of Intersecting Lines CC.7.G.5 Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem.

Warm Up Name an example of: Obtuse, acute, straight, & adjacent ∠ ’s (Be sure to use 3 letters when naming the ∠ ) B H T A M.

Angle Relationships.

Angle Pair Relationships

Sum of the Angle Measures of a Triangle Angle Pairs Lesson 40Power Up GPage 285.

Angles. R S T vertex side There are several ways to name this angle. 1) Use the vertex and a point from each side. SRTorTRS The vertex letter is always.

Any two angles whose sum is 180 degrees. Supplementary Angles.

Geometry. Definitions Geometry Definitions 1.straight angle - 180º.

Lesson 1-1 Point, Line, Plane 1 Points Points do not have actual size. How to Sketch: Using dots How to label: Use capital letters Never name two points.

What’s Your Angle? An Introduction to Angle Pair Relationships.

2-4 Special Pairs of Angles. A) Terms 1) Complementary angles – a) Two angles whose sum is 90° b) The angles do not have to be adjacent. c) Each angle.

Geometry 8 th Grade Algebraic Angles Essential Questions How can I use the special angle relationships – supplementary, complementary, vertical, and.

Angle Relationships Lesson 9-3. Angle Relationships Vertical angles are the opposite angles formed by intersecting lines. Vertical angles are congruent.

Warm-Up. 2.6 Parallel Line Angles Objective Explore relationships of the angles formed by a transversal cutting parallel lines. HW: p. 141 #1, 3-6, 9-10.

Angle Relationships. Adjacent Angles 1.Are “next to” each other 2.Share a common side C D are adjacent K J are not adjacent - they do not share a side.

Exploring Angle Pairs Unit 1 Lesson 5. Exploring Angle Pairs Students will be able to: Identify Special Angle Pairs and use their relationships to find.

Angles in Parallel Lines

5-2 Parallel and Perpendicular Lines Warm Up Problem of the Day

Angles and Their Relationships

Angle Relationships & Parallel Lines

Angle Relationships & Parallel Lines

Angle Relationships in Parallel Lines and Triangles

Angle Relationships.

Angle Relationships.

Types of Angles & Their Relationships

Exploring Angle Pairs Unit 1 Lesson 5.

Angle Relationships How can you use Angle Relationships to solve problems? How would you measure the opposite angles formed by two intersecting lines,

Adjacent, Vertical, Supplementary, and Complementary Angles

Angle Relationships Teacher Twins©2014.

Ifc: Ratios, Rates, Proportions

Angle Pair Relationships

Angles and Parallel Lines

Parallel Lines and Transversals

Congruent, Supplementary, and Complementary

Insert Lesson Title Here

Angle Relationships Pre-Algebra.

Angle Pair Relationships

Writing Equations to Find Missing Angles

Objectives: Identify parallel and perpendicular lines

Angle Relationships & Parallel Lines

Today’s Lesson Determining Angle Measures when Parallel Lines Are Cut by a Transversal.

Vertical Angles, Linear Pairs, Exterior Angles

Writing Equations to Find Missing Angles

Angle Relationships Teacher Twins©2014.

Find the value of g. Find the value of h. 105° h g 75°

Adjacent, Vertical, Supplementary, and Complementary Angles

Presentation transcript:

Angle Relationships & Parallel Lines Mrs. Wedgwood

Adjacent angles are “__________” and share a ______________. 45º 15º

These are examples of ______ _____. 55º 35º 50º130º 80º 45º 85º 20º

These angles are ___ _______. 45º55º 50º 100º 35º

________________________ 40° 50°

Complementary angles add up to ____. 60º 30º 40º 50º _____________________Complementary Angles but ______ Adjacent

___________________ 30° 150°

_______________________. 60º120º 40º 140º Adjacent and Supplementary Angles Supplementary Angles but not Adjacent

___________________________. 100°

Vertical Angles are __________one another. Vertical angles are ____________. 80°

Lines __ and __ are ___________. ____________ 120° l m Note the 4 angles that measure 120°. n Line n is a transversal.

Lines ____ and ____ are _______. _________ 60° l m Note the 4 angles that measure 60°. n Line n is a transversal.

__________________________ 60° l m There are many pairs of angles that are supplementary. There are 4 pairs of angles that are vertical. 120° n Line n is a transversal.

If _____lines are intersected by a transversal and any of the angle pairs shown below are ________, then the lines are _______. This fact is used in the construction of ___________ ___________

Practice Time!

1) Find the missing angle. 36° ?°?°

2) Find the missing angle. 64° ?°?°

3) Solve for x. 3x° 2x°

4) Solve for x. 2x + 5 x + 25

5) Find the missing angle. ?°?° 168°

6) Find the missing angle. 58° ?°?°

7) Solve for x. 4x 5x

8) Solve for x. 2x x + 20

9) Lines l and m are parallel. l || m Find the missing angles. 42° l m b°b° d°d° f°f° a ° c°c° e°e° g°g°

10) Lines l and m are parallel. l || m Find the missing angles. 81° l m b°b° d°d° f°f° a ° c°c° e°e° g°g°

11) Find the missing angles. 70 ° b° 70 ° d °65 ° Hint: The 3 angles in a triangle sum to 180°.

12) Find the missing angles. 45 ° b° 50 ° d °75 ° Hint: The 3 angles in a triangle sum to 180°.

TOD ……………….In the figure a || b. 13. Name the angles congruent to  Name all the angles supplementary to  If m  1 = 105° what is m  3? 16. If m  5 = 120° what is m  2?

The End