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  1. ΔXYZ was reflected across XZ, as shown at right. Homework Help ✎

    1. How can you justify that the points Y, Z, and Y′ all lie on a straight line?

    2. What is the relationship between ΔXYZ and ΔXYZ? Why?

    3. Read the Math Notes box for this lesson. Then make all the statements you can about the corresponding parts of these two triangles.

YZX = 90°

Remember that reflections do not change the size or shape of a figure.

Altogether, you should be able to make six statements.
Be sure to make them for all corresponding angles and sides.