Which of the following is NOT possible? A = A triangle where one angle measures 20 degrees and another angle measures 45 degrees. B = A triangle where one angle measures 120 degrees and another angle measures 50 degrees. C = A triangle where one angle measures 90 degrees and another measures 100 degrees. D = A triangle were one angle measures 67 degrees and another measures 67 degrees. Group of answer choices B C A D

C

Step-by-step explanation:

the angle measures of triangles must add up to 180 degrees. Since we are only given two angles, we can assume that all of the answers that add up to be below 180 degrees fulfill this requirement with the third angle. However, answer choice C adds up to 190 degrees on the first two angle, which means that no matter how low the third angle is, it will never add up to 180 degrees.

you have to find the same variables -3n - 5n so this would be -3n +(-5n) which equals -9n