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**Question**

16) A, B, C and D are points on the circumference of a circle.

PQ is a tangent to the circle at D.

Angle BDQ = 72° and angle ABD = 63°

a) Work out angle

Give a reason for your answer.

Angle

Angle BDQ = 72° and angle ABD = 63°

a) Work out angle

*x*.Give a reason for your answer.

Angle

*x*= ...................° because ............................................................**[2 marks]**

b) Work out angle

*y*.

Give a reason for your answer.

Angle

*y*= ...................° because ............................................................

**[2 marks]**