Agenda: Check Homework 4.2 Notes Skills Check

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Presentation transcript:

Agenda: Check Homework 4.2 Notes Skills Check 4.2: Angles of Triangles Agenda: Check Homework 4.2 Notes Skills Check

Check Homework

Triangle Angle Sum Theorem: Question, Topics and Vocabulary Problems, Definitions and Work Triangle Angle Sum Theorem: Auxiliary Line:

Example 1 a) Is the following triangle isosceles, scalene, or equilateral? 3x 4x – 10 2x + 30 (x – 10)° (4x - 10)° (5x)°

Example 2: The diagram shows the path of the softball in a drill developed by four players. Find the measure of each numbered angle.

Remote Interior Angles Exterior Angle Remote Interior Angles Exterior Angle Theorem

Example 3: Find the measure of angle FLW in the fenced flower garden shown.

Triangle Angle- Sum Corollaries Corollary Triangle Angle- Sum Corollaries 4.1 4.2

Example 3: Find the measure of each Numbered angle. a. ∠1 = b. ∠2 = c. ∠3 = d. ∠4 =

Example 4: Find m3 if m5 = 130 and m4 = 70. Find m1 if m5 = 142 and m4 = 65. Find m2 if m3 = 125 and m4 = 23.

Example 5 Find the value of x.