Find the measure of the third angle

Let the third angle be x°.

32°+70°+x° = 180°. ( sum of angles is 180°)

102°+x°= 180°

x°= 180°-102°

x°=78°

therefore, the third angle is 78°.

Step-by-step explanation:

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step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2