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4-3

4-3. Congruent Triangles. Holt Geometry. Warm Up. Lesson Presentation. Lesson Quiz. Do Now 1. Name all sides and angles of ? FGH . 2. What is true about ? K and ? L ? Why? 3. What does it mean for two segments to be congruent?. Objectives. TSW use properties of congruent triangles.

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Warm Up Find the measures of the sides of ? ABC and classify the triangle by its sides.

Warm Up Find the measures of the sides of ? ABC and classify the triangle by its sides. A(-7, 9) B(-7, -1) C(4, -1) AB = 10 BC = 11 AC = ?221 The triangle is scalene. FG , GH , FH , ? F , ? G , ? H. Warm Up 1. Name all sides and angles of ? FGH .

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