







Can you construct a regular 21gon? 
20160308 

Peter pose la question : hi, i know that if i use a compass to draw a circle, i can use the same setting to mark 6 intervals along the circle circumference, how would i go about marking out 21 equally spaced points around the circumference?
if there an online calculator i can us, or some other interesting trick?
tia
peter Robert Dawson lui répond. 





A boy walks 3km due east and 4km due north 
20130201 

Kayode pose la question : Question from Kayode
A boy walks 3km due east and 4km due north. Find the bearing of the final point and the distance of the final position from the starting point. Harley Weston lui répond. 





COMPASS BEARING 
20100922 

Vivinne pose la question : Three boys, Isaac, Alex and Ken are standing in different parts of a football
field.Isaac is standing 100m North of Alex. Ken is 120m East of Alex. Find
the compass bearing of Ken from Isaac. Stephen La Rocque lui répond. 





Dividing a segment into 3 congruent parts 
20071030 

Carolyn pose la question : I am doing construction. I have a line segment drawn. I need to divide a segment into 3 congruent part. How do I do that? Penny Nom lui répond. 





Constructing figures 
20050920 

Kim pose la question : I would like to know how to draw different shapes:
Regular Octagon with sides of length, 1 unit
Equilateral Triangles, with sides of length 1 unit
Regular Hexagons, with sides of length 1 unit
Isoseles Triangles, with hypotenuse of length 1 unit
Penny Nom lui répond. 





A ruler and compass construction 
20030629 

Mandy pose la question : I have been searching for instructions on how to do this using a compass. Can you please send instructions step by step on how to bisect a segment into any given number of segments. (example, a way that it will work for bisecting segment into 3, 4, or even 5 congruent parts) Penny Nom lui répond. 





Construct a pentagon 
20021212 

Mary pose la question : We were wondering what the instructions/formula, stepbystep, is to make a pentagon. Chris Fisher and Penny Nom lui répond. 





Compass points 
20021105 

Mhairi pose la question : I was asked this in maths but I am not sure if it is geography. Name all the compass points? We have been given 8 but he told us there is more and we have to name them. Chris Fisher lui répond. 





Constructing the square root of 3 
20020607 

Allan pose la question : I am a Math 7/8 teacher. I was wondering how you would show a student how to find the exact location of the square root of three on the number line using just a compass and a straight edge. Penny Nom lui répond. 





Vector Problem 
20001127 

Ben pose la question : An aircraft can fly 260km/h in still air and the wind is blowing at 70km/h towards the West. In what direction should the aircraft head so that its actual velocity is on a bearing of 030 degrees? Harley Weston lui répond. 

