Answer:
Step-by-step explanation:
if 12 + 18 = 30 and A is the sum of the previous...." the sum " is the result of addition.....means A = 30
so A + 19 = 30 + 19 = 49 <===
270.15
92
The sum of a quadrilateral interior angles is 360°. In order to get the measurement of the missing angle you have to subtract 360 from 62,92, and 114 which will result in 92
