F4 Circles (5): angles

Which of the following pairs of angles are " $\angle$ s in the same segment" and hence must be equal?

• a and d

• b and f

• h and f

• e and h

In the figure, BOD is a diameter. $\angle BAC=x\degree$ and hence  $\angle ACB=y\degree$   .  Then,  $y=$  (no need to input unit in your answer)

In the figure, BOD is a diameter.   $\angle ACB=28\degree$  and hence  $\angle ACD=z\degree$    .  Then,  $z=$  (no need to input unit in your answer)

In the figure, x =

•  $22\degree$  .

•  $42\degree$  .

•  $44\degree$  .

•  $46\degree$  .

In the figure, which of the following angles equal  $40\degree$  ?

•  $\angle BDC$  

•  $\angle ACD$  

•  $\angle AED$  

•  $\angle ABD$  

In the figure, x =

•  $50\degree$  .
  

•  $60\degree$  .
  

•  $70\degree$  .

•  $80\degree$  .