Answer:
B) 77
Step-by-step explanation:
The sum of both values is 202. given that the total angle can only be 180 that would have to leave x with the value of -11 to equal 180 leaving the answer to be B 77.
1.23 is the correct answer
First you need to know that the internal angles of a triangle always equals 180°. Therefore:
15+45= 90°
Then since the angles should equal 180, you do:
180-90=90
So the missing angle equals 90°
Answer:
x=59
Step-by-step explanation:
x+12+x+x-9=180
3x+3=180
-3 -3
3x=177/3
x=59
