Final answer:
To solve for x, subtract the given angle from 180. The value of x for each angle is: a) 99°, b) 144°, c) 117°, d) 81°
Step-by-step explanation:
The sum of the angles in a triangle is always 180 degrees. To solve for x, we need to add the given angles and subtract the result from 180. Let's calculate it:
a) 81°: 180 - 81 = 99°
b) 36°: 180 - 36 = 144°
c) 63°: 180 - 63 = 117°
d) 99°: 180 - 99 = 81°
Therefore, the value of x for each angle is:
a) 99°
b) 144°
c) 117°
d) 81°