OML Search

Construct Shapes


Videos and lessons to help High School students learn how to construct an equilateral triangle, a square, and a regular hexagon inscribed in a circle.



Common Core: HSG-CO.D.13

Constructing an Equilateral Triangle
Using compass and straightedge to construct an equilateral triangle.





Constructing an equilateral triangle inscribed in a circle
How to construct an equilateral triangle inscribed in a circle using a safety compass.


Geometric Constructions - The Square
How to construct a square inscribed in a circle using only a compass and straightedge.




Regular Hexagon Construction
How to use a compass and straightedge to construct a regular hexagon inscribed in a circle.


Square From Diagonal Using Compass and Straight-edge
Given a line segment as the diagonal of a square, construct the square.
Let A-C be the given diagonal.
Step - 1 With A-C as radius and with centers as A & C respectively draw two circles.
Step - 2 Find the points of Intersection of these two circles. Line connecting these is perpendicular bisector of A-C.
Step - 3 with center as center point of A-C draw a circle passing through A & C. Find points of inter-section of this circle with perpendicular bisector of A -C. These are the vertices of square namely B &
Step - 4 Complete the square A-B-C-D and hide all construction lines.


Regular Hexagon Construction





Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

Fraction Concoction Game


OML Search


We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.