If f(1) = 8 and f(n) = 5f * (n - 1) - 2 then find the value of f(3) .

Which geometric principle is used to justify the construction below?

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given

Need answer asap (see image) (20 points)