1. Draw two arcs with the same radius at point A and B.
2. Join the intersection points C and D (see picture). The line CD bisects arc AB into two equal parts.
3. The point S of intersection of arc AB and line CD is a middlepoint of the arc AB.
Answer:
The second option.
3x + 6 = 21.
Step-by-step explanation:
3x + 6 = 21.
If x = 5, plug it in.
3 · 5 + 6 = 21
15 + 6 = 21
Hope this helps,
Davinia.