an English fifty pence piece
they aren't used in real life, not unless you need them in a situation were you would need to use them.
natural numbers are used in real life for counting, adding, subtracting and even for calculting money purposes
Close to infinitely many.
Roller Coasters
If you have to hang a picture or something on the wall.
Heptagons, or seven-sided polygons, are not very common in everyday life, but they can be found in certain architectural designs and art installations. One example is the layout of some garden designs or park features. Additionally, certain gaming dice, known as heptagonal dice, have seven sides and are used in various tabletop games. Also, some stop signs in specific countries may be designed with a heptagonal shape.
All seven sided polygons are known as "heptagons". Heptagons that have all side lengths the same are known as "regular heptagons".
Proportions are used in real life to determine prices of things.
Believe it or not, school is a real life situation. If you are using it in school it real life for you.
7
They can if they are regular.
Yes.
no
If you are in school and are studying trig then you are using trig in real life.
25
Not regular heptagons.
For two 7 sided regular heptagons to be congruent they must be identical in shape and size.