Question

picture 1: points B,D and F are midpoints of the sides of EC=30 and DF=17. find AC
60
30
34
8.5

picture 2: find the value of x
4
8
6.6
6

picture 3: find the value of x
32
50
64
80

picture 4: B is the midpoint of AC, D is the midpoint of CE, and AE=21. find BD
42
12
11.5
10.5

picture 5: find the length of the midsegment
24
0
42
84

Answer 1

picture 1=(b) 30
picture 2=(a) 4
picture 3=(b) 50
picture 4=(d) 10.5
picture 5=(c)42

Answer 2

The rotational symmetry of a shape explains that when an object is rotated on its own axis, the shape of the object looks the same.

Hope it will be helpful :)