Regular Polygons
We are going to draw polygons using two diferent methods: 'Inscribed in a circle' or 'given the side'.
1.REGULAR POLyGONS INSCRIBED IN A CIRCLE.
How to draw an equilateral triangle inscribed in a circle
How to draw a square inscribed in a circle
.HOW TO DRAW A REGULAR PENTAGON INSCRIBED IN A CIRCLE
How to draw a regular hexagon inscribed in a circle
How to draw a regular heptagon inscribed in a circle
HOW TO DRAW A REGULAR OCTAGON INSCRIBED IN A CIRCLE.
2.REGULAR POLyGONS KNOWING THE LENGHT OF ONE SIDE.
How to draw a regular pentagon knowing the length of one side
How to draw a regular hexagon knowing the length of one side
How to draw a regular heptagon knowing the length of one side
How to draw a regular octagon knowing the length of one side
Follow the instructions in the video, check your exercise and be sure it is right
Geometric construction of regular inscribed polygons. General method.
This is the method we use to draw any regular polygon inscribed in a circle, or divide the circumference into any number of equal parts. We are going to divide our polygon in 10 equal parts, remember to use parallel lines to apply the Thales Theorem as we learnt last year.
How to draw star poligons
Let´s pratice the Basic Geometrical Constructions we have learnt by designing our own MANDALA.by drawing a "Geometric Eye"
2- Then you divide the circumference in 4 equal parts, then divide each sector using the "angle bisector construction" in 4 equal parts again. You will have a total of 16 equal parts.
3- You draw an inscribed circumference of 4 cm radius.
THEORY AND PRACTISE FOR THE EXAM
Let's practise again with different videos, some of them in Spanish:
REGULAR POLYGONS GIVEN THE SIDE (IN SPANISH):
REGULAR POLYGONS INSCRIBED IN A CIRCLE