Posted by **piyush** on Thursday, November 25, 2010 at 7:42am.

in a paralleogram,if angle A=(2x+25)degree and angle B=(3x-5)degree,find the value of x and the measure of each angle of the parallelogram.

- math -
**drwls**, Thursday, November 25, 2010 at 9:16am
A parallelogram has two equal angles A and two equal angles B. The equal angles are diagonally across from one another.

A + B = 180 degrees. Thus

2x + 25 + 3x -5 = 180

5x = 160

x = 32

A = 89

B = 91.

It is almost a rectangle.

- math -
**Bosnian**, Thursday, November 25, 2010 at 9:20am
The angles of a parallelogram satisfy the identities:

A=C

B=D

A+B=180°

A+B+C+D=360°.

C=A=(2x+25)

D=B=(3x-5)

A+B=180°

2x+25+3x-5=180°

5x+20°=180°

5x=180°-20°

5x=160°

x=160°/5

x=32°

A=C=(2x+25°)=2*32°+25°=64°+25°=89°

B=D=(3x-5°)=3*32°-5°=96°-5°=91°

A=89°

B=91°

C=89°

D=91°

A+B=91°+89°=180°

A+B+C+D=89°+91°+89°+91°=360°

- math -
**andriania**, Tuesday, February 22, 2011 at 9:06pm
find the of each parallelogram and what lathr mean like u' f.v.y.n

## Answer this Question

## Related Questions

- Math - In triangle ABC, the degree measure of angle A is 20 degree greater than ...
- math - Angle P and Q are a linear pair. Angle Q is 36 degree less than twice of ...
- math - In triangle ABC, angle B = 3, angle A and angle C = 8 angle A. How many ...
- Trig - I need help setting these up. 1.) Use the parallelogram rule to find the ...
- math - I put the wrong angle measure on my earlier question. It should have been...
- Geometry/Algebra - Two opposite angles of a parallelogram are (5x-2)degree and (...
- Math - In a triangle the two larger angles differ by 10 degree. The smaller ...
- geometry - the degree measure of angle A is represented by 2x-20 and the degree ...
- math - The supplement of an angle measures 11 times its complement. Then the ...
- algebra. - problems about angles: Hi. I needed help on some problems for the ...