Answer:
A' (6,8) B' (6,2) C' (-2,1)
Step-by-step explanation:
When reflecting across the y-axis, the y-coordinates stay the same while the x-value gets reverted into either a negative or a positive ( negative turns into positive or positive gets turned into a negative).
where is the question
c
step by step my g
10°
the sum of interior angles of triangle is 180°
so. 8x+x+90°=180°
9x=90°
x=10°