Which of the following polygons has three lines of symmetry a. regular pentagon b. square c. regular hexagon d. equilateral triangle

D. Equilateral triangle

Step- by-step explanation:

Regular polygon is a polygon which has all the angles and sides are in the same measure.

The number of line of symmetry on the regular polygons depends upon the number sides.

Regular pentagon - which is 5 sided figure, so there will be five lines of symmetry.

Square - which 4 sided figure, so there will be four lines of symmetry.

Regular hexagon - which is 6 sided figure, so there will be six lines of symmetry.

Equilateral triangle - which is 3 sided figure all the sides and all the angles are in equal measure. There will be three lines of symmetry.

So, the answer is D. Equilateral triangle.

answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y

12.5 feet

step-by-step explanation: