







The area of a triangle given its vertices 
20121127 

elizabeth pose la question : how to calculate the area of a triangle using points ABC a (2,5) b ( 4,3) c ( 6, 1) Penny Nom lui répond. 





The maximum distance from the vertex of a triangle 
20120502 

David pose la question : There are three towns A,B,and C, equidistant apart.
A car is 3 miles from town A, and 4 miles from town B.
(ie, somehwere outside of the triangle which the three towns form)
What is the maximum distance that the car can be from town A?
This was asked as quiz question in my local pub last Sunday.
The answer is 7. How do I prove it?
Best regards. David in Denton. Robert Dawson and Chris Fisher lui répond. 





6 faces and 8 corners 
20110304 

noemi pose la question : jeff made a figure with 6 faces the figure has 8 corners all of the faces are the same size and shape what figure did jeff make Penny Nom lui répond. 





Vertices and sides of a polygon 
20110304 

RINA pose la question : My questions is : would a vertices and sides of a polygon be the same number. For example, a octagon it has 8 points and 8 sides. Am i correct? Robert Dawson lui répond. 





The vertices of an equilateral triangle 
20100219 

Emma pose la question : If two of the vertices of an equilateral triangle are (2,1) and (6,5), what
are the two possible coordinates of the third side of the triangle? Answer
in radical form. Tyler Wood lui répond. 





A triangular pyramid 
20100105 

ally pose la question : how many vertices, edges, faces in a triangular pyramid? Robert Dawson lui répond. 





A shape with 10 sides 
20090303 

Sandra pose la question : One of my son's math questions is as follows:
Suppose I have a shape with 10 sides. I choose a vertex then draw lines to the other vertices that dont share sides with the first vertex. How many vertices will that be and why? Penny Nom lui répond. 





A triangular pyramid 
20090226 

Craig pose la question : Can you help with this question:
Write the names of the faces and the number of each kind of face on a triangular
pyramid? Penny Nom lui répond. 





Vertices, edges and faces 
20090219 

Deb pose la question : I have been reading the responses you have to whether or not a cone and cylinder have edges, and whether a cone has a vertex. I have also found differing answers in different books and websites. Your idea that it depends why we want to call it a vertex or edge is interesting but does not help the students next year when they have a different teacher who tells them that whatever decision I make is wrong! It also doesn't help them when they do the provincial testing. Does anyone know if EQAO considers them vertices or edges? I want to know because textbooks and provincial tests often ask the students to count the number of faces, edges, and vertices or to describe a solid by using these, or to identify a solid that they have described. We need to have consistency in what we are teaching! Chris Fisher lui répond. 





Faces, edges and vertices 
20090204 

sheila pose la question : what is the relationship between the number of faces and the number of edges of a triangular pyramid ? Penny Nom lui répond. 





The vertices of a triangle 
20080927 

T. pose la question : how do you find the coordinates of the vertices of the triangle with the sides determined by the graphs of the following equations:4x+3y+1=0,4x3y17=0,4x9y+13=0? Harley Weston lui répond. 





Joining vertices in a polygon 
20080818 

Megan pose la question : I'm trying to develop a relationship between the number of points of a regular polygon and the
(a) number of lines you could draw between those points,
(b) number of triangles you could draw,
(c) number of quadrilaterals,
etc. Penny Nom lui répond. 





A shape 
20080403 

Joshua pose la question : what shape has 4 faces, 4 corners and 9 edges. Penny Nom lui répond. 





The number of faces and vertices in a pyramid 
20080402 

Laurie pose la question : Can you find a connection between the number of faces and vertices in a pyramid and the number of sides of it's base??? Penny Nom lui répond. 





Some solid figures 
20080228 

tiffany pose la question : What solid figure could have? It has 4 more edges than vertices, Penny Nom lui répond. 





A line drawn between 2 vertices 
20080226 

Arshad pose la question : what is a line drawn between 2 vertices which are not next to each other called. Penny Nom lui répond. 





What solid figure has 1 flat surface and 0 vertices? 
20080130 

Cheronda pose la question : What solid figure has 1 flat surface and 0 vertices? Stephen La Rocque and Harley Weston lui répond. 





Sides and vertices 
20071117 

derek pose la question : What is the correct name for a 2D geometric shape that would look like one slice from a round pizza and how may sides and vertices would it have? I believe you would say it has one vertex and two sides with the curved boundary not resulting in vertices or a side. Your help is much appreciated. Chris Fisher and Walter Whitelty lui répond. 





A line between 2 vertices 
20071028 

robert pose la question : what do we call a line between 2 vertices which are not next to each other Walter Whiteley lui répond. 





The diagonal of a square 
20070923 

Nasreen pose la question : A(7,2) and C(1,4) are two vertices of a square ABCD
find in the form ax+by=c the equation of the diagonal BD Stephen La Rocque lui répond. 





Vertices 
20070918 

Richard pose la question : Please help. Do not understand vertices, as in how many in a cone, hemisphere, etc. Harley Weston lui répond. 





How many vertices are there? 
20070910 

Makayla pose la question : I've just started the 4th grade and I am having trouble with a question on my homework. The questions is: Carrie is arranging sticks to make shapes. she has made a closed figure, with 10 sides How many vertices are there? I believe the answer is ten but I'm not sure. Stephen La Rocque and Walter Whiteley lui répond. 





A triangular pyramid 
20070722 

shani pose la question : my homework question is confusing (yr 7 beginner)
"How many vertices does a triangular pyramid have."
(Mum thinks all triangles are triangular& vertices are sides)
I want to be sure. Penny Nom lui répond. 





Hexagonal pyramids 
20070517 

Tracey pose la question : How many faces, edges, and vertices does a hexagonal pyramid have? Stephen La Rocque lui répond. 





What's a vertex? What's an edge? 
20070516 

Sophie pose la question : I don't understand what is a vertex and what is an edge. Please put a picture up and explain. I am a fifth grader. Brennan Yaremko and Steve La Rocque lui répond. 





The vertices of a triangle 
20070502 

natakie pose la question : Find the coordinate of the vertices of a triangle whose sides lie on the following three lines.
2x+5y16=0, 4x3y6=0 and 3x+y+2=0 Penny Nom lui répond. 





Vertices, edges and faces 
20070419 

Kimberly pose la question : I am trying to help my son find the vertices, edge, and face of a 16 sided figure.
I am not sure of the process to use to find these, could you please tell me
how to do this? Penny Nom lui répond. 





Which solid figure has 4 more edges than vertices? 
20070322 

dawn pose la question : which solid figure has 4 more edges than vertices? Penny Nom lui répond. 





What constitutes a face for a geometric solid? 
20070214 

Erica pose la question : What constitutes a face for a geometric solid? We have been getting conflicting answers from different textbooks. Some teachers are saying that cylinders and cones do not have faces. I'm thinking that cylinders have 2 and cones have 1. Please enlighten me. Thanks! Walter Whiteley lui répond. 





A cylinder has how many flat surfaces, vertices, and edges? 
20070109 

Stacy pose la question : A cylinder has how many flat surfaces, vertices, and edges? Diane Hanson and Penny Nom lui répond. 





A pyramid 
20040511 

Quiana pose la question : I am a student and I have the following questions I need to answer for homework:
How many sides, vertices, and edges does a pyramid have? Penny Nom lui répond. 





8 faces, 12 vertices, and 18 edges 
20030422 

Thomas pose la question : I would like to know the proper name for this geometrical solid. It has 8 faces, 12 vertices, and 18 edges? Penny Nom lui répond. 





If you conect all the vertices of a regular ngon... 
20020401 

Murray pose la question : If you conect all the vertices of a regular ngon with lines you will have (n3)(n/2) lines inside the polygon. I want to find out how many sections these lines divide the polygon into and how many intersections they have with each other. Claude Tardif lui répond. 





Vertices 
20010808 

Jordan pose la question : I am a fifth grader learning geometry with my mom's help, can you please explain what a vertices are?? Penny Nom lui répond. 





Euler's Formula 
20001111 

Denise Roberts pose la question : I'm trying to design a unit (possibly involving a Webquest) on Polyhedra and I cannot find a formula I once used. The formula involved the number of vertices (V), edges (E), and faces (F) of the polyhedra. Walter Whiteley lui répond. 

