Answer:
Altitude of Equilateral Triangle h = (1/2) * √3 * a. Angles of Equilateral Triangle: A = B = C = 60° Sides of Equilateral Triangle: a = b = c.
Hope this helped!
If you would like me to simplify it a little let me know.
Answer:
A. (U+V)^2 or (U-V)^2
Step-by-step explanation:

10 + 15x + x + 10
= 16x + 20
500,000 round up from 491,852 to 500,000