Saturday

August 23, 2014

August 23, 2014

Posted by **Robin** on Tuesday, January 12, 2010 at 11:47pm.

- math -
**drwls**, Tuesday, January 12, 2010 at 11:57pmFirst angle = A

second angle = B

Third angle = 3

A + B + C = 180

B = 2A

C = B - 20

B/2 + B + (B-20) = 180

5/2 B = 200

B = (2/5)*200 = 80

You finish it.

- math -
**timmy**, Tuesday, January 12, 2010 at 11:58pm40 degrees 60 degrees and 80 degrees

**Related Questions**

Algebra - Could anybody help me with these two problems, or at least the 1st one...

math - in a triangle, the measure of the first angle is twice the measure of the...

math - the second angle of a triangle is twice the first angle. The third angle ...

geomitry - the first angle of a triangle is complementry to the third angle. the...

College Math - In a certain triangle the measure of one angle is triple the ...

Math - In a triangle, one angle is twice the measure of the second angle. The ...

algebra. - problems about angles: Hi. I needed help on some problems for the ...

math - In a triangle, the measure of the second angle is twice the measure of ...

math - A triangle has angles described as followed: the first angle is four more...

math geometry - in a triangle, the measure of the first angle is four times the ...