'Exterior angle' diaporamas de présentation

Chapter 5 : Circles

Chapter 5 : Circles.

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Year 8: Geometric Reasoning

Year 8: Geometric Reasoning. Dr J Frost (jfrost@tiffin.kingston.sch.uk). Objectives: Be able to reason about sides and angles, and find interior/exterior angles of polygons. Last modified: 12 th April 2014. STARTER : Identifying 2D polygons. !.

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4-3

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Geometry

Geometry. Agenda 1. ENTRANCE 2. Go over Practice 3. Quiz 4. 3-4 The Polygon Angle-Sum Theorems 5. Practice Assignment 6. EXIT. Practice. Quiz Time Good Luck!!!. Chapter 3. 3-4 The Polygon Angle-Sum Theorems. Polygon.

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Find the sum of the interior angles of a (an):

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Triangle Inequalities

inequaltites in a triangle and theorems

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Testing

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8.7 Polygons

8.7 Polygons. I can identify regular and not regular polygons and find the angle measurements of regular polygons. Review The lengths of three sides of a triangle are given. Classify the triangle. 1. 12, 12, 12 2. 18, 10, 14 3. 15, 15, 26. equilateral. scalene. isosceles. Vocabulary.

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Unit 3 Comp 4B

Unit 3 Comp 4B. Interior/Exterior Angles in Regular Polygons R.4.G.2 Solve problems using properties of polygons: sum of the measures of the interior angles of a polygon interior and exterior angle measure of a regular polygon or irregular polygon

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3.5 Parallel Lines and Triangles

3.5 Parallel Lines and Triangles. Objectives. To use parallel lines to prove a theorem about triangles To find measures of angles in triangles. Parallel Postulate. Postulate 3.3 Through a point not on a line, there is one and only one line parallel to the given line. Not Parallel. l. P.

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Lesson 3-1

Triangle Fundamentals. Lesson 3-1. B. C. A. Naming Triangles. Triangles are named by using its vertices. For example, we can call the following triangle:. ?ABC. ?ACB. ?BAC. ?BCA. ?CAB. ?CBA. Opposite Sides and Angles. Opposite Sides:. Side opposite to ? A :.

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5-6 Inequalities in One Triangle

5-6 Inequalities in One Triangle. Comparison Property of Inequality. Corollary to the Triangle Exterior Angle Theorem. The measure of an exterior angle of a triangle is greater than the measure of each of its remote interior angles. Problem 1: Applying the Corollary. Theorem 5-10.

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16-2 Regular Polygons

16-2 Regular Polygons. A polygon is regular if (1) it is convex, (2) all of its sides are congruent, and (3) all of its angles are congruent. . Construction of a regular hexagon. Draw a circle and use the length of the radius to mark off 6 equal spaced points then connect the consecutive points.

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Section 5.5

Section 5.5. Inequalities in One Triangle. Theorem 5.10. If one side of a triangle is longer than another side, then the angle opposite the longer side is larger than the angle opposite the shorter side. 15. B. 12. A. THEOREM 5.11.

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Unit 4 Part 2

Unit 4 Part 2. Regular Polygons. Polygons. Polygons are a enclosed flat (on the same plane) shape. Names of Polygons. Triangle has 3 sides Quadrilateral has 4 sides Pentagon has 5 sides Hexagon has 6 sides Heptagon has 7 sides Octagon has 8 sides

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Polygons

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Journal chapter 4 geometry

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4.2 Angles of Triangles

4.2 Angles of Triangles. Objectives: *Apply the Angle Sum Theorem. *Apply the Exterior Angle Theorem. Mrs. S. Williams. Angle Sum Theorem. X. The sum of the measures of the angles of a triangle is 180. W + X + Y = 180. W. Y. Exterior Angle Theorem.

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4.2 Angle Measures of Triangles

4.2 Angle Measures of Triangles. textbook page 179. Triangle Sum Theorem. the sum of the angles of a triangle always = 180 o. Corollary to Triangle Sum Theorem. the acute angles of a right triangle are complementary. Exterior Angle theorem.

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