The angels of a triangle have a sum of 180°. the angles of a rectangle have a sum of 360°. the angels of a pentagon have a sum of 540°. continue this pattern to find the sum of the angles of an octagon

Step-by-step explanation:

It is given that the angels of a triangle have a sum of 180°. The angles of a rectangle have a sum of 360°. The angels of a pentagon have a sum of 540.

Let me define the each terms.

1. We know that each angle in a triangle is 60°, So there is a three angle in a regular triangle.

2. We know that each angle in a rectangle, is 90°, So there is a four angle in a regular rectangle.

Similarly,

So, sum of the angles of an octagon = 135° × 8

Sum of the angles of an octagon = 1080°

Therefore, the required sum of the angles of an octagon is 1080°

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.

the answer is c

step-by-step explanation: i took a test with this question on it