Chapter 1.4 Angle Measure. Vocabulary Ray – part of a line that has one endpoint and extends indefinitely in one direction. Opposite Rays – two rays that.

Slides:

Advertisements

Similar presentations

1-4 Angle Measure.

Advertisements

Lesson 1-4 Angle Measure. Ohio Content Standards:

Angles Measures Angles Measures Objective: Identify angles & parts of angles Identify angles & parts of angles Use the angle addition postulate to find.

Geometry Vocabulary Lesson #3. #12 Angle A figure formed by 2 rays with the same endpoint.

Measure and classify Angles

Bell Work In your group, solve the following problems. The color indicate the person that’ll write the answer to the question. (4 questions about line.

Bell Ringer – Put in your notebook. Constructions - Turn to p. 30 ‘Bisect a Segment” Do Steps 1-3 Use half of a sheet of paper in your notes Turn in all.

Welcome to Interactive Chalkboard

Measuring Angles Chapter 1 Section 4. ANGLE An angle is two rays that share a common endpoint. A B C Angles are named by a point on each side and the.

Classifying Triangles Angle Measures of Triangles.

Math I CAN find the measure of angles. I CAN construct angles.

Splash Screen. Lesson Menu Five-Minute Check (over Lesson 1–3) NGSSS Then/Now New Vocabulary Example 1:Real-World Example: Angles and Their Parts Key.

Chapter 13 L13-1 Notes: Angles. Vocabulary Angles have two sides that share a common endpoint called the vertex of the angle.

Geometry and Measurement Chapter Nine Lines and Angles Section 9.1.

Section 1-4 Angles and their Measures. Angle Formed by two rays with a common endpoint –T–The rays are the sides of the angle –T–The common endpoint is.

LESSON 1–4 Angle Measure.

Angle Measure Section 1-4. angle – a figure consisting of 2 noncollinear rays with a common endpoint. The 2 rays are called the sides of the angle. The.

Lesson 1-4 Angle Measure. 5-Minute Check on Lesson 1-3 Transparency 1-4 Click the mouse button or press the Space Bar to display the answers. Use the.

Geometry Vocabulary Introduction to Classifying Angles.

1.4 Measure and Classify Angles. Definitions Angle – consists of two different rays with the same endpoint. B C vertex The rays are the sides of the angle.

Splash Screen. Lesson Menu Five-Minute Check (over Lesson 1–3) Then/Now New Vocabulary Example 1:Real-World Example: Angles and Their Parts Key Concept:

Splash Screen. Lesson Menu Five-Minute Check (over Lesson 1–3) CCSS Then/Now New Vocabulary Example 1:Real-World Example: Angles and Their Parts Key Concept:

Splash Screen. Lesson Menu Five-Minute Check (over Lesson 1–3) CCSS Then/Now New Vocabulary Example 1:Real-World Example: Angles and Their Parts Key Concept:

Splash Screen. Over Lesson 1–3 5-Minute Check 1 A.2 B.4 C.6 D.8 Use the number line to find the measure of AC.

Example 1.Name all angles with B as a vertex. 2. Name the sides of angle Write another name for angle 6.

Welcome to Interactive Chalkboard Glencoe Geometry Interactive Chalkboard Copyright © by The McGraw-Hill Companies, Inc. Developed by FSCreations, Inc.,

Geometry 1-3 Basics of Angles Vertex- The common endpoint of an angle’s rays (plural: vertices). Interior of an angle- in between the sides of the angle.

Basics of Geometry Defining Terms

Lesson 4: Angle Measure. » Degree- the unit of measurement for an angle » Ray- a part of a line which has one endpoint and one end that extends infinitely.

Angles  Learn to name and measure angles.. Lines and Rays: A Ray is part of a line. A Ray has one initial point and extends indefinitely in one direction.

Warm Up 1.) Name a line that contains C. 2.) Name a ray with endpoint B that contains A. 3.) Name an angle with vertex B that contains C. 4.) Name a segment.

CHAPTER 1: Tools of Geometry Section 1-6: Measuring Angles.

Geometry Notes. The Language of Geometry Point: A point is a specific location in space but the point has no size or shape Line: a collection of points.

Notes #2 (1.4) 1.4 Angles Measure

1.4 Measure and Classify Angles. Objectives: How to label, measure, and classify angles How to label, measure, and classify angles Identifying and using.

M217 Section 1.3 Measuring Angles. Angle Terminology: Angle: 2 different rays with the same endpoint Vertex: Common endpoint - A Sides: Two rays – Naming:

Transparency 2 Review: Lesson 1-3 Mini-Quiz. Class Greeting.

1.4 Angle Measures. Objectives: How to label, measure, and classify angles How to label, measure, and classify angles Identifying and using congruent.

Lines and Angles Ray Congruent Equal in size and shape.

Geometry Lesson 1 – 4 Angle Measure Objective: Measure and classify angles. Identify and use congruent angles and the bisector of an angle.

Measuring Angles. Vocabulary An angle has two sides and a vertex. The sides of the angles are rays. The rays share a common endpoint (the vertex) Angles.

1-1a Slide 1 of 2 (over Chapter 2). 1-1b Slide 1 of 2 (over Chapter 2)

1-4: Measuring Angles. Parts of an Angle Formed by the union of two rays with the same endpoint. Called sides of the angle Called the vertex of the angle.

Triangles and Their Angles Geometry – Section 4.1.

< is the less than symbol ∠ is the angle symbol Exploring Angles Section 1.6a.

Splash Screen. Then/Now You measured line segments. (Lesson 1–2) Measure and classify angles. Identify and use congruent angles and the bisector of an.

Lesson 4 Menu Warm-up Problems Use the number line to find each measure. 1.AC 2.DE 3.Use the number line to find the midpoint of EG. 4.Find the distance.

Measures and Relationships.  Ray – part of a line that includes one endpoint and extends infinitely in one direction  Opposite rays – rays that share.

Warm Up If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

1.4 Angle Measure Then: You measured line segments.

Ray-- A part of a line that extends indefinitely in one direction from a fixed point. Opposite rays-- Two rays that are part of the same line and have.

Bell Ringer do 1-4 only on your BR sheet.

What is a protractor and why is it used?

Suppose S is between R and T

BELLRINGER: 1) For a segment where T is between A and D, where AD = 20, AT = 2x and TD = 2x + 4. Find x and AT. (Hint: Draw a picture) 5-Minute Check 1.

Classify angles and triangles 10.3

Measure and classify angles.

Warm up: Skills Check 1-3 This will go under GRADED classwork!

LESSON 1–4 Angle Measure.

< is the less than symbol ∠ is the angle symbol

Measure and classify angles.

< is the less than symbol ∠ is the angle symbol

1.3: Measuring and Constructing Angles

Measures and Relationships

Lesson 4 MI/Vocab Measure and classify angles.

undefined term definition defined term space point line plane

LESSON 1–4 Angle Measure.

Five-Minute Check (over Lesson 1–3) Mathematical Practices Then/Now

Presentation transcript:

Chapter 1.4 Angle Measure

Vocabulary Ray – part of a line that has one endpoint and extends indefinitely in one direction. Opposite Rays – two rays that share a common endpoint and are collinear Angle – formed by two noncollinear rays (sides) that share a common endpoint (vertex). There is an interior of each angle and an exterior of each angle.

Example 1 Angles and Their Parts A. Name all angles that have B as a vertex. Answer:

Example 1 Angles and Their Parts Answer: B. Name the sides of  5.

Example 1 Angles and Their Parts C.

Example 1a A. B. C. D.

Example 1b A. B. C. D.none of these

A. B. C. D. Example 1c Which of the following is another name for  3?

Concept

Measure and Classify Angles A. Measure  TYV and classify it as right, acute, or obtuse. Answer: m  TYV = 90, so  TYV is a right angle.

Measure and Classify Angles Answer: 180 > m  WYT > 90, so  WYT is an obtuse angle.

Measure and Classify Angles

Protractor Time! Measure an angle Create an angle

Measure and Classify Angles INTERIOR DESIGN Wall stickers of standard shapes are often used to provide a stimulating environment for a young child’s room. A five-pointed star sticker is shown with vertices labeled. Find m  GBH and m  HCI if  GBH   HCI, m  GBH = 2x + 5, and m  HCI = 3x – 10.

A.m  BHC = 105, m  DJE = 105 B.m  BHC = 35, m  DJE = 35 C.m  BHC = 35, m  DJE = 105 D.m  BHC = 105, m  DJE = 35 Find m  BHC and m  DJE if  BHC   DJE, m  BHC = 4x + 5, and m  DJE = 3x + 30.