AccelePrep for the ACT Test 2nd Edition Student Text

C HAPTER 5 | H YPER P REP M ATH • 113

1. If the measure of an angle is 42.5°, what is the measure of its supplement? (Shown below) A. 17.5° B. 47.5° C. 67.5° D. 137.5° E. Cannot be determined from the information given 2. What is the perimeter of the triangle shown below? F. 3 2 G. 6 H. 7.5 Ǥ ͻ K. 15 42.5 ° “Guesstimating” is a useful technique, but often it will not be enough to accurately determine the correct answer. In these situations, measure. While you aren’t allowed to bring a protractor or a ruler to the test, you will have something that does both jobs: the answer sheet. The answer sheet has four right angles—one at each corner. If you have trouble visualizing angles, the answer sheet will help; you can use any corner of the answer sheet to measure angles. This will immediately reveal whether an angle is larger than, smaller than, or exactly 90°. 3.  –Š‡ ϐ‹‰—”‡ „‡Ž‘™ǡ x = ?

Examples:

Explanations for the example questions are included later in the chapter. Circle your answers now. Later when you reach the explanations at the end of the section, come back and check to make sure you answered the questions correctly.

YOU CAN MEASURE

Example:

STRATEGY ALERT Keep your mind open to the possibilities for measurement shortcuts.

A. 30 B. 45 C. 60 D. 75 E. 90