The question is a printscreen photograph

Question

anonymous · Answer

attachment

anonymous · Answer

here it is

mathstudent55 · Answer

How many sides does a quadrilateral have?

anonymous · Answer

4

anonymous · Answer

idk the answer is 2340

mathstudent55 · Answer

Do you want to understand this or not?

mathstudent55 · Answer

Don't worry about the answer. Let's concentrate on how to get there so you understand the problem.

anonymous · Answer

yes idk for each side u have to rest 2

mathstudent55 · Answer

A quadrilaterla has 6 sides.
How many sides in a hexagon?
How many sides in an octagon?

anonymous · Answer

12 sides for the hexagon

mathstudent55 · Answer

No. 6 sides for the hexagon and 8 sides for the octagon. Just count them in the picture.

The formula they use is
180 * 2 when there are 4 sides
180 * 4 when there are 6 sides
180 * 6 when ther are 8 sides
The 180 is always the same.
How did they get the numbers 2, 4 and 6?

anonymous · Answer

by subtracting 2

mathstudent55 · Answer

Exaclty.
So the formula is 180*(n - 2)
where n = number of sides.

mathstudent55 · Answer

Take the number of sides and subtract 2, then multiply by 180.

anonymous · Answer

so 180(15-2)
2340

mathstudent55 · Answer

If you have 15 sides, then you have 180 * (15 - 2) = 180 * 13 = 2340, which is the number you already knew.

mathstudent55 · Answer

Exactly.
You do understand this after all! Good job!

anonymous · Answer

thanks

mathstudent55 · Answer

wlcm