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Iloverunning2002
The measure of all the internal angles need to measure 360. How you do this question is you add all the angle measurements and then equal them to 360. Find x and to find the measure of angle A you just insert the measure of x in the problem. 
32x+20+72x+20+32x+10+52x+40=360 (add)
188x+90=360 (subtract 90 from both sides)
188x=270 (divide both sides by 188)
x=1.4 
32(1.4)+20=66 (rounded)


berodiac

Answer:

65°

Step-by-step explanation:

Opposite angles in a cyclic quadrilateral are supplementary.

5

2

x + 40 +

3

2

x + 20 = 180

x = 30

then,

∠A =

3

2

x + 20

∠A =

3

2

(30) + 20 = 65

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