4-1 Congruent Figures

4-1 Congruent Figures

1. Congruent figures have the same SIZE and same SHAPE.

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In this chapter, you will learn about congruent TRIANGLES.

Cool!

CORRESPONDENING VERTICES, SIDES, AND ANGLES

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CONGRUENCE STATEMENT

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POSSIBLE ANSWERS

EXAMPLE

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Multiple Choice

If

 $\Delta KLM\cong\Delta WXY$  
then, KM = _____.

• WY

• WX

• XY

Multiple Choice

If

 $\Delta GHI\cong\Delta XYZ$  , then  $\angle I\cong_{ }$  ______

•  $\angle Z$  

•  $\angle X$  

•  $\angle Y$  

Multiple Choice

5. Since congruent triangles have the same shape, their ______ are congruent. (Make an educated guess)

• corresponding angles

• corresponding sides

Multiple Choice

6. Since congruent triangles have the same size, their ______ are congruent. (Make an educated guess)

• corresponding angles

• corresponding sides

7. DEFINITION OF CONGRUENT TRIANGLES:

Two triangles are CONGRUENT if and only if their vertices can be matched up so that the corresponding parts (angles and sides) of the triangles are congruent.

CONGRUENT POLYGONS

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