Answer:
1. 10
2. 6.5
3. 20
4. 5= ½ (x+1)
x=9
5. 31 = ½ (2x)
x = 31
Step-by-step explanation:
USE THE MIDLINE THEOREM
The midline theorem claims that cutting along the midline of a triangle creates a segment that is parallel to the base and half as long.