Lines and angles.

Slides:

Advertisements

Similar presentations

Angles and Triangles p.551 D E F

Advertisements

Aim: What’s outside the triangle?

Unit 1 Angles formed by parallel lines. Standards MCC8G1-5.

Complementary, Supplementary, and Vertical Angles x Y X + Y = 180 ° A B A + B = 90 ° C D E FG DCE = m m FCG.

Using Angle Relationships

Section 1.6 Pairs of Angles

Vertical, Complementary, and Supplementary Angles Unit 1 Part 5.

Angle Relationships Section 1-5 Adjacent angles Angles in the same plane that have a common vertex and a common side, but no common interior points.

Geometry Section 1.5 Describe Angle Pair Relationships.

UNIT 01 – LESSON 06 – ANGLE RELATIONSHIPS Essential Question How can you describe angle pair relationships and use thee descriptions to find angle measures?

Triangles and Lines – Sum of the Angles in a Triangle The sum of the angles in any triangle = 180°

At the end of this lesson you will be able to: Determine the names of angles based on their degree of measurement. Determine the names and properties of.

Are the following triangles congruent? If yes, state the triangle congruence postulate, and identify the congruent triangles. Bell Ringer.

The sum of the measure of the angles of a triangle is 1800.

1.5 Exploring Angle Pairs.

2-4 Special Pairs of Angles Objectives -Supplementary Angles Complementary Angles -Vertical angles.

Section 1-6 Angle Pair Relationships. Vertical angles Formed when two lines intersect. Vertical Angles are Congruent. 1 2.

- 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.

Geometry. Triangles Triangle angle sum theorem: the sum of the angles in any triangle is 180° Triangle inequality theorem: the sum of the lengths of any.

Angle and Triangle Flash Cards

Answers to Evens 2) Definition of Bisector 4) Angle Addition Postulate

2.4: Special Pairs of Angles

Making a decision … Now that you know 3 ways to solve a system of equations, how to choose which method to use when solving systems of equations.

Angle Relationships.

1-3 Pairs of Angles.

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

Classifying Angles. Vocabulary Acute Angle – an angle that is less than 90 o Obtuse Angle - an angle that measures between 90 o and 180 o Right Angle.

Objective-To find missing angles using rules of geometry. Supplementary Angles- Angles whose sum is 180. a b.

Inscribed Angles By the end of today, you will know what an inscribed angle is and how to find its measure.

7.G.5 ~ Find measures of angles formed by intersecting lines.

Pairs of Angles Geometry Farris O I can identify adjacent, vertical, complementary, and supplementary angles. I can find measures of pairs of angles.

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

Use Inscribed Angles and Polygons Lesson Definitions/Theorem 10.7 BAC = ½(BC) Intercepted Arc Inscribed Angle A B C. Central Angle.

13.1 Angle Relationships.

Types of Angle Pairs Foldable

Warm up # Exploring Angles Adjacent Angles  Angles with a common vertex and one common side  Think: side by side or right next to Angles.

Vertical AnglesSupplementary Angles Adjacent Angles.

8.2 Supplementary Angles Definitions: 1. Opposite Rays: rays that extend in opposite directions. 2. Straight Angle: Angle that measures 180  3. Supplementary.

Objective: SWBAT find missing angles that are supplementary or around a point.

Angles in Parallel Lines

Angle Relationships By Mr. Q.

Adjacent, Vertical, Complimentary and Supplementary Angles

Angle Relationships Lesson 1.5.

Angle Relationships & Parallel Lines

Aim: What’s outside the triangle?

Aim: What’s outside the triangle?

Angles and Triangles.

Angles that have a sum of 90°

Angle Relationships.

1.5 Exploring Angle Pairs.

Types of Angles & Their Relationships

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

B D E What is the difference between a point and a vertex?

Objective-To find missing angles using rules of geometry.

Ifc: Ratios, Rates, Proportions

4.6 Isosceles Triangles Theorem 4.9 Isosceles Triangle Theorem

Aim: What’s outside the triangle?

Geometry 2 Level 1.

Writing Equations to Find Missing Angles

Special Pairs of Angles

Describe Angle Pair Relations

Aim: What’s outside the triangle?

Vertical Angles, Linear Pairs, Exterior Angles

Writing Equations to Find Missing Angles

10.4 Inscribed Angles.

Adjacent Angles Definition Two coplanar angles with a common side, a common vertex, and no common interior points. Sketch.

Finding Unknown Angles

Presentation transcript:

lines and angles

Given: ACB = 20° DEF = 130° Find: CDE = __________ D F A E C B

vertical (opposite) angles have the same measure Given: ACB = 20° DEF = 130° Find: CDE = __________ D F A 20° E 20° C B vertical (opposite) angles have the same measure

Given: ACB = 20° DEF = 130° Find: CDE = __________ D F A E C B 130°

supplementary angles have measures whose sum is 180° Given: ACB = 20° DEF = 130° Find: CDE = __________ D F 130° A 20° 50° E C B supplementary angles have measures whose sum is 180°

the sum of the measures of the angles of a triangle is 180° Given: ACB = 20° DEF = 130° Find: CDE = _110°______ D F A 20° 50° E C B the sum of the measures of the angles of a triangle is 180°

A C B D F E G I H

 A C B D F E G I H

 A C B 150° D F 150° E G 150° I H

A C 140°  B 150° D F 150° E G 150° I H

A C 140° 110° 40° B 30° 110 150° D F E G I H