Two parallel lines are cut by a transversal. What is the measure of <7?

A. 57°

Step-by-step explanation:

Same side exterior angles are supplementary

∠ 1 + ∠7 = 180°

123° + ∠7 = 180°

-123°              -123°

∠7 = 57°

the perimeter is increased by a factor of 2

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐