What is the sum of the interior angles of a polygon with 5 sides?
Answer and explanation
Correct answer: B. 540°
- Step 1: Split the polygon into triangles: . Answer: 540°. Why not the others: 900°: multiplies by 180 only. 720°: subtracts only 1. 360°: gives the exterior angle sum.
Practise more Problem Solving in Mathematics.
Free questions with an explanation for every one, and full timed ENLA Secondary Practice (Peru) mock tests.
More Problem Solving in Mathematics questions
- A school notebook costs S/ 4.50. How much do 6 of these notebooks cost in total?
- A rectangular garden is 12 m long and 7 m wide. What is its perimeter?
- The ages of five cousins are 4, 8, 6, 10 and 12 years. What is their mean age?
- Solve for : .
- A bag holds 3 red, 5 blue and 2 green marbles. One marble is drawn at random. What is the probability that it is red?
- A jacket priced at S/ 150 has a 20% discount. How much does the customer pay?