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Chapter 4: Congruent Triangles

SWBAT: Use properties of congruent triangles to solve problems. You will accomplish this on slide 3 and 4. Chapter 4: Congruent Triangles. 4.6.2 Use Congruent Triangles. Proofs: More Shapes.

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Chapter 4: Congruent Triangles

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  1. SWBAT: Use properties of congruent triangles to solve problems You will accomplish this on slide 3 and 4 Chapter 4: Congruent Triangles 4.6.2 Use Congruent Triangles

  2. Proofs: More Shapes • We have looked at proofs for 3 sided (triangles) and 4 sided (quadrilaterals (2 x Triangles and 4x Triangles) • Now we need to look at shapes with more sides, there are more combinations of triangles

  3. Convex Polygons: Pentagon • Figure ABCDE and Figure VWXYZ are regular pentagons. • prove VY  AC Z E V A D Y C B X W

  4. Concave Polygons: • Prove VYX  WYZ • Look at TYZ  UYX, why? • Look at TYU • How would subtraction help? T T U U V W X X Y Y Y Y Z Z

  5. Redraw the diagram • As you have seen it might be a good idea to copy the triangles in the diagram into another diagram. • This works for all diagrams, feel free to do transformations, they are congruent.

  6. Homework • P. 259 • 6, 12, 13, 14, 20, 21, 33, 40

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