Math problems on barrons math workbook...please!!help!!!

<p>Okay, the explaination is way to wordy and I don't get it.</p>

<p>pg 235 No. 7</p>

<p>Which of the following CANNOT represent the degree measure of an equiangular polygon?</p>

<p>A. 165
B. 162
C. 140
D. 125
E. 90</p>

<p>Pg 237 No. 15
It has a figure, so i can't draw it out.</p>

<p>come on....please...anyone????</p>

<p>hey
check the degree measure with the eq</p>

<p>n = 360/(180-y)</p>

<p>n = no. of sides
y =degree measure of an equiangular polygon</p>

<p>try out the options in the above equation and if n is an integer then it can be the measure of an equiangular polygon otherwise not</p>

<p>i hope it helps</p>

<p>only 125 doesn't fit, which is the answer</p>

<p>2nd problem</p>

<p>let the interior angles be a,b,c,d</p>

<p>take the complete exterior angle which is 360-a, 360-b,360-c,360-d</p>

<p>add the ext angles and the subtract 180 for every angle (bcoz the anglle above the st line which is 180 isn't included)</p>

<p>so it is</p>

<p>360-a + 360-b + 360-c + 360-d - 4(180)
= 4(360)-4(180)-(a+b+c+d)
=720-(a+b+c+d)
=360 (bcoz sum of int angles of a quad = 360)</p>

<p>hope this helps</p>