3. What shape am I? Choose the right shape from the list below. rectangle, square, octagon, triangle, isosceles triangle, pentagon


a) I have 3 sides. b) I have as many sides as an octopus has legs. c) I have 4 sides, each side of equal length. d) I have 3 sides, 2 of which are the same length. e) I have as many sides as you have toes on 1 foot. f) I have 4 sides. The parallel sides are the same length.


Polygons 2-D shapes that have the same number of sides and angles are called polygons.


1. Make each of these polygons on a geoboard or with lollipop sticks and record how many sides and angles are in each one.


a) Triangle b) Octagon c) Rhombus


Sides: Angles: d) Hexagon


Sides: Angles: e) Square


Sides: Angles: f) Quadrilateral


Sides: Angles:


Sides: Angles:


Sides: Angles:


A regular polygon is a polygon with sides of the same length and with angles that are all the same.


2-D Shapes 67


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