1. Triangle Sum Theorem Focus - Prove the Triangle Sum Theorem 2. If you add up the measures of the interior angles of a triangle, What is the total? 180º 25º 65º 3. How…

Slide 1NCTM Standards: 2, 3, 6, 8, 9, 10 Slide 2 (Only one is possible) These properties can also be applied to the measures of angles & segments. Slide 3 Example 2-1a…

1. 4.14.1 Apply Triangle Sum Properties Bell Thinger 1. 90º ANSWER right 2. 72º Classify each angle as acute, obtuse, or right. ANSWER acute 3. 116º ANSWER obtuse 2. 4.1…

1. GEOMETRY MILBY HIGH SCHOOL MR. SAUCEDO 4.1 Applying Triangle Sum Properties 2. OBJECTIVE We will classify triangles and find measures of their angles. 3. REVIEW On…

1. Geometry Angles of Triangles The Triangle Angle Sum Theorem The Exterior Angle Theorem 2. Remember! When you look at a figure, you cannot assume segments or angles…

1. TRIANGLE 2. CONTENTS TRIANGLES 1. DEFINITION 2. PROPERTIES 3. SECONDARY PART 3. TRIANGLES A triangle is a 3-sided polygon. Every triangle has three sides, three vertices…

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Slide 1Lesson 3-4 (Parallel & Perpendicular Lines) perpendicula r parallel Slide 2 3 Patterns (Perpendicular & Parallel) Theorem 3-7 If a // b b // c then a // c…

Slide 1Angles in a Circle Keystone Geometry Slide 2 Types of Angles There are four different types of angles in any given circle. The type of angle is determined by the location…

Slide 1 Section 5.3 Inequalities in One Triangle Slide 2 Slide 3 Slide 4 The definition of inequality and the properties of inequalities can be applied to the measures of…