Answer:
Q1
Angle addition
- ∠AOB + ∠BOC = ∠AOC
- ∠AOB + 27° = 47°
- ∠AOB = 20°
Correct choice is c. 20
Q2
ΔABC ≅ DFE
Corresponding parts are congruent
- Side AB is corresponding with DF, therefore AB≅DF
- AB = 30 in
Correct choice is C
Q3
A translation is the sliding
Correct choice is B.
- A- rotation
- C - dilation
- D- reflection
