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9-13.
  1. Copy the triangles at right onto your paper. Homework Help ✎

    1. Label the missing sides with their exact lengths. That is, leave your answers in radical form.

    2. A 30º-60º-90º triangle is sometimes called a half-equilateral triangle. Draw a picture to illustrate this, and explain how that fact can be used to help label the missing sides in part (a).

Refer to your work from problem 9-4 in the previous lesson.

What would happen if you changed the orientation of the triangle?

Where would the line of symmetry lie?