Question

picture 1:
find the measure of DEA
130
230
140
120

picture 2:
identify a semicircle that contains c
ABC
AC
CB
ACB

picture 3:
name the minor arc and find its measures
ADE 30
AB 115
ADE 245
AB 245

picture 4:
the are of sector AOB is 20.25(pi)ft squared. find the exact area of the shades region

Answer 1

DEA is 130 picture 1

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 :)