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# SAT Math: What It Is and How to Prepare (page 3)

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Updated on Jul 10, 2009

Geometry: If p, q, and r are the degree measures of the three angles of an isosceles triangles and p = 100, then q = ??

This is a student response question. Please fill in the answer grid below:

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This problem requires two geometry facts. First, that an isosceles triangle has two equal sides and two equal angles. And, that the angles in any triangle add up to 180. If p = 100, then there are 80 degrees left. So q+r = 80, and since q and r must be equal, q = r = 40.

As you can see from just these five problems, there’s a lot of review to do before your student takes the SAT. She’s sure to benefit from a formal course, or you can collect your own materials and set aside time at home. But one thing is for certain – there’s no shortcut for practice when it comes to helping your student do her best on what might be the most important test she’ll ever take.

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