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Take a look at this video, the start of "The Nightmare before Christmas" by Tim Burton  (1993, a classic...)   Halloween is back... let’s create a Halloween atmosphere using our imagination! This watermelon felt exceedingly happy to know that not just pumpkins were invited to this Halloween Party...:  

This term we will continue with GEOMETRY by designing a beautiful mandala. But first we will check our knowledge about regular polygons. Here is a few videos to help us.   REGULAR POLYGONS AND ORIGAMI I found a very interesting page to revise and check your knowledge of the Basic Geometry Terms with pictures. Check it out! Here is another link  to go over "the basics of geometry", some of them we have already seen before. 

It is time to get started with the compass! We will draw two VERY IMPORTANT constructions, used in technical drawing to construct almost everything, EVEN A KITE! It is CRUCIAL that you learn how to do them by observing and practising. SO LETS DO IT!: PERPENDICULAR BISECTOR LINE Definition: The perpendicular bisector is a PERPENDICULAR line that DIVIDES a line segment into TWO EQUAL parts. It also makes a right angle with the line segment. Each point on the perpendicular bisector is at the same distance from each of the endpoints of the original line segment. It is basically a line which cuts a line segment into two equal parts at 90°.       ANGLE BISECTOR LINE Definition:  It is a line that DIVIDES the angle in TWO EQUAL parts. PRACTISE:  USING THE ANGLE BISECTOR LINE TO CONSTRUCT A KITE

NOTABLE POINTS OF THE TRIANGLE: CIRCUMCENTER, INCERTER, ORTHOCENTER The INCENTER and CIRCUMCENTER of an EQUILATERAL TRIANGLE are in the exact same point.   Paper folding - the perpendicular bisectors of a triangle       Paper folding - the angle bisectors of a triangle      

TRIANGLES  A triangle has three sides and three angles  The three angles always add to 180° TYPES OF TRIANGLES QUADRILATERALS Quadrilateral just means "four sides" ( quad  means four,  lateral  means side).  Any four-sided shape is a Quadrilateral .  But the sides have to be   straight , and it has to be   2-dimensional   TYPES OF QUADRILATERALS General Properties  Four sides (edges) Four vertices or vertexes (corners) The interior angles add up to  360 degrees : Try drawing a quadrilateral, and measure the angles. They should add to  360° Individual Properties  Check this web and videos:  Quadrilaterals TYPES OF ANGLES TYPES OF TRIANGLES