MATH 6 1. Write the letter of the correct answer on the space before each number. 1. A is a simple closed figure formed by union of line segments. b. Polygon c. Line d. Rectangle a. Shape 2.A is a set of numbers wnitten in a special order by the application of a definite rule b. Pattern c. Sequence d. Form a. Term 3. What is the Algebraic expression for thirty plus thrice a number"? a. 30 x 3 b. 30 + 3n c. 30 + n3 d. 30 x 3 + 3​