21=you add 2+3 which equals 5 and 4+6 equals 10.22=6+3 equals 9 and 12+6 equals 18.23=2+6 equals 8
You can find the solution for x by subtracting 5 from 12 which is -17. 5 added to 17 would be -12 so x = -17.
Answer:
Scalene Acute
Step-by-step explanation:
All the sides have different lengths, and all the angles are less than 90˚ so I'm pretty sure it's a scalene acute triangle.
