balalahanaa balalahanaa

24-06-2021
Mathematics

contestada

the size of an interior angle of a regular polygon is 3x. It's exterior is (x- 20)°. Find number if the sides of the polygon.

Respuesta :

04-07-2021

Answer: 12

Step-by-step explanation: Since the angles are supplements, 3x + x - 20 = 180. Solving this, we find that x = 50, and 3x = 150. Since dodecagons have interior angles of 150 degrees, the answer is 12 sides.

Answer Link

Otras preguntas

What does the symbol of comets represent in this excerpt?

Netflix is considering a new romcom (romantic comedy) series. Before making a final decision, the producers design an experiment to estimate the proportion of v

what is the rule for 2;13;26;32?

This is geometry help me

please help i have no idea what to do

what is the input for air cooler computer science

This image represents Theodore Roosevelt, president from 1901 to 1909, known for the phrase "speak softly and carry a big stick." Which of the following is a va

What hypothesis can be made based on the details Lehner gives in paragraph 2? OA. Plants whose life cycles depend on fires caused by lightning strikes will beco

analiza la siguiente frase: "El trabajo académico y profesional no debiera incurrir en plagio o en la usurpación de las ideas de otros, dados susu afectos negat

which item gave the store about 1/4 of its profit?