Geometric thinking

We did an activity that has got to do with angles, sides and shapes. We were challenged by Dr Yeap to find the angles in a pentagon.

It was indeed a challenging activity for me. It took me quite awhile to understand on how to manipulate with the shapes and find the angles. Luckily there were people who were able to explain to me about it. Thanks classmates!

I personally think this concept (angles in shapes) should be introduced to the Kindergarten two children. I do not think it is suitable for the younger ones as it may be too complex and difficult for them. (If an adult is unable to solve, it may be more difficult for the young ones.) But of course, no harm letting them try. I just do not think it is appropriate.

Like what was said in class... We need to learn to see what's inside the picture.

Some information to share: Names of polygons

Name	Alternate names	Sides	Internal Angles (Regular Polygons Only)
Henagon	Monogon	1
Digon		2
Triangle	Trigon	3	60° / Total 180°
Quadrilateral	Tetragon	4	90° / Total 360°
Pentagon		5	108°
Hexagon		6	120°
Heptagon	Septagon	7	128.571°
Octagon		8	135°
Enneagon	Nonagon	9	140°
Decagon		10	144°
Hendecagon	Undecagon	11	147.273°
Dodecagon		12	150°
Tridecagon	Triskaidecagon	13	152.308°
Tetradecagon	Tetrakaidecagon	14	154.286°
Pentadecagon	Quindecagon Pentakaidecagon	15	156°
Hexadecagon	Hexakaidecagon	16	157.5°
Heptadecagon	Heptakaidecagon	17	158.824°
Octadecagon	Octakaidecagon	18	160°
Enneadecagon	Enneakaidecagon Nonadecagon	19	161.053°
Icosagon		20	162°

For more: http://www.purplehell.com/riddletools/polys.htm