Answer:
29
Step-by-step explanation:
Since all triangles have to add up to 180, we can do the sum of the two angles we know minus 180. 90+61=151, 180-151=29
So your answer would be 29
Answer:
Negative. The answer gives - 5
Answer:
12
Step-by-step explanation:
4-2x=-18
-4 -4
-2x=-24
-2 -2
x=12
Fundamental principle of counting
