Posted by **fiaie** on Thursday, August 24, 2006 at 1:39pm.

In a triangle ABC, angle A is 2 times angles C and angle B is 20 degrees less than angle C find the number of degrees in these angles

In a triangle ABC, angle A is 2 times angles C and angle B is 20 degrees less than angle C find the number of degrees in these angles

A = 2C

B = C - 20

Since the sum of the degrees of any triangle

*always* = 180 degrees, A + B + C = 180. Substituting the above values of C for A and B will give you the value of C. Substitute the value of C in the other formulas and then check by putting all three values in A + B + C = 180.

I hope this helps. Thanks for asking.

um i am still confuse.. that helps alittle i did the problem and C= 50 do u plug that answer in the equation? i needa find the number of degrees in these angles...

** 50 degrees is correct for angle C.
**

You know A = 2C; therefore, A = 2 x 50 = 100.

You know B = C - 20. I will let you finish. I hope this helps. Check to make sure all of them add to 180.

## Answer This Question

## Related Questions

- GEOMETRY (Angles) PLEASE - in triangle ABC, angle b is 5 more than twice angle A...
- math - In a triangle ABC,angle B is 3 times angle A and angle C is 5 degrees ...
- Algebra - In a triangle ABC, angle B is three times angle A and angle C is 5 ...
- algebra - In a triangle ABC , angle B is 4 times angle A and angle C is 17 ...
- Geometry - Please answer at least one . PLEASE 1. Triangle XYZ has a right angle...
- geometry - In a triangle ABC, angle B is 3 times angle A and angle C is 8 ...
- math - In a triangle ABC, angle B is 5 times angle A and angle C is 18° less ...
- algebra 1 - In a triangle ABC,angle b is 4 times angle "A" and angle "C" IS 17 ...
- algebra 1 - In a triangle ABC,angle b is 4 times angle "A" and angle "C" IS 17 ...
- ALGEBRA 1 - If x and 3x-10 represent the measure of the acute angles of a right ...

More Related Questions