Pre-Calculus Homework Solutions 239

# Pre-Calculus Homework Solutions 239 - 37 The sum of the...

This preview shows page 1. Sign up to view the full content.

241 Chapter 8 31. Since n 5 10, the sum of the measures of the interior angles is 180(10 2 2) or 1440. The sum of the given measures is 10 x 1 440. Find x . 1440 5 10 x 1 440 1000 5 10 x 100 5 x The measures of the interior angles of the decagon are 105, 110, 120, 130, 135, 140, 160, 170, 180, and 190. 32. Since n 5 5, the sum of the measures of the interior angles is 180(5 2 2) or 540. Write an equation to express the sum of the measures of the interior angles of the polygon. 540 5 m / A 1 m / B 1 m / C 1 m / D 1 m / E 540 5 6 x 1 (4 x 1 13) 1 ( x 1 9) 1 (2 x 2 8) 1 (4 x 2 1) 540 5 17 x 1 13 527 5 17 x 31 5 x Use the value of x to find the measure of each angle. m / A 5 6 ? 31 or 186, m / B 5 4 ? 31 1 13 or 137, m / C 5 31 1 9 or 40, m / D 5 2 ? 31 2 8 or 54, and m / E 5 4 ? 31 2 1 or 123. 33. Sample answer: Since n 5 4, the sum of the measures of the interior angles is 180(4 2 2) or 360. Write an equation to express the sum of the measures of the interior angles of the quadrilateral. 360
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 12/19/2011 for the course MAC 1140 taught by Professor Dr.zhan during the Fall '10 term at UNF.

Ask a homework question - tutors are online