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18 items are filed under this topic.
A circle with a circular hole 2019-03-11
From Sue:
My little one is wondering if a circle with a circular hole could be described as an irregular semicircle.
As it has 2 sides but is not the standard shape. Could you share your thoughts ??

Answered by Penny Nom.
Polygons with two names 2008-10-24
From Connor:
Why do some polygons have two names and what are they?. Thanks
Answered by Harley Weston.
More on quadrilateral shape names 2007-05-26
From Don:
If North Americans call a quadrilateral with no parallel sides a trapezium, is a kite merely a special type of trapezium? Can a rhombus be a kite?
Answered by Walter Whiteley and Penny Nom.
A 13 sided figure 2007-04-12
From Kiara:
I was wondering what you call a 13 sided figure. I'm in 6th grade and my teacher said i could get extra credit if I figure this out. Thanks a lot for your help.When I get extra credit I will be sure to mention you guys! Thanks!
Answered by Stephen La Rocque.
A fifteen sided polygon 2004-03-05
From Joann:
Answered by Penny Nom.
The quadratic formula 2003-08-31
From Alex:
I am using Houghton Mifflin's Precalculus with Limits book, 2nd edition. However, the first chapter encompasses Algebra review, and I am stuck on a problem. All that's required is to solve the following and verify using a calculator:
I have solved the problem using the quadratic formula, but from what I remember, the quadratic formula is used in the case of equations following the AX2+BX+C=0 pattern. As the problem I am attempting uses a y-variable, can I still use the quadratic formula? Since I am not sure what route to take in solving this problem, I am hoping you can assist me.

Answered by Harley Weston.
Division names 2003-03-10
From A parent:
what is the answer to a division problem called
Answered by Penny Nom.
Hundreds, thousands, millions,... 2003-02-19
From Karissa and Jasmeen:
hundreds, thousands, millions, - can you help us with the rest of this sequence - we are trying to find the largest number
Answered by Penny Nom.
A 91-gon 2001-09-10
From Ashley:
Hi! My name is Ashley and I am an 8th grader and I couldn't find the name of a polygon with 91 sides. i was a question from my math teacher.
Answered by Penny Nom.
6,000,000,000,000,000,000 2001-07-12
From James:
How would I express 6,000,000,000,000,000,000 in words?
Answered by Leeanne Boehm.
Names of the polygons 2001-03-15
From Sami:
I was asked to find out what the names for different polygons were. The only two I cannot find are the names for a polygon with 30 sides and a polygon with 40 sides. I would really appreciate it if you could help me. Thank you very much.
Answered by Harley Weston.
Shape names 2001-02-26
From Paul:
I have been asked to give names of shapes from A to Z . I can only find 14 shapes can you help..... I'm missing letters b, g, j, l, m, n, u, v, w, x, y, z.
Answered by Harley Weston.
Undecagon 2001-02-21
From Karen:
I need to know what kind of a polygon an undecagon is and how many sides it has. This is a problem in my math book.
Answered by Penny Nom and Michael Tsatsomeros.
A 100-gon 2000-05-24
From Chris Mohr:
What is a 100-gon called?
Answered by Harley Weston.
Names of the polygons 2000-01-29
From Janemath:
I have been doing research on the names of polygons with 11 to 20 sides. I have found conflicting names for some of them . for example 18 sided-octadecagon and octokaidecagon. 11sided-undecagon and hendecagon. Why is this? Is one more correct than another? Or are they equally acceptable?
Answered by Harley Weston.
A Kite 1998-10-07
From Paul Scott:
What is the mathematical term for the kite shape?
Answered by Walter Whiteley.
The origin of angles 1998-02-24
From Marc Poulin:
I'm currently teaching angles to students in grade 10 and I've been asked what's the origin of the terms degrees, radians and gradians.

I know that the radians come from the sexagesimal numerical system of the Babylonians but my kids wanted to know dates and persons who would have brought these terms first.
Answered by Harley Weston.

Names of the Polygons 1997-03-04
From Manuel:
What do you call a 13 sided polygon?
Is there a list of the different names?

Answered by Walter Whiteley and Harley Weston.



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