Bounded by three or more sides Line that Straight Polygon joins twoline sides non- meet at adjacent point vertices of called a Made of polygon is vertex straight lines, called a and the shape diagonal is “closed”
Which of following are polygon? Why?POLYGON because have straight sides and enclosedNOT A POLYGON because not enclosed figureNOT A POLYGON because has a curve
I have 3 straight sides.I have 3 vertices.What shape am I? I’m a triangle!
TRIANGLE Equilateral Isosceles Triangle Scalene Triangle TriangleThree equal sides Two equal sides No equal sides Three equal Two equal angles No equal anglesangles, always 60°
I have 4 straight sides.I have 4 vertices. What shape am I? I’m a quadrilateral!
QUADRILATERAL 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.
Symmetry• An object is said to have line(s) of symmetry if one side of it overlaps exactly with the other. Line of symmetry (vertical) Line of symmetry (diagonal) Line of symmetry (horizontal)
1. Which of the following is a correct definition of a polygon? A . A closed plane figure with 3 or more straight edges as its sides. B. A figure with 3 or more straight edges. C. A closed figure with either straight or curved edges as its sides. D. A plain figure with 3 or more straight edges as its sides.
2. Name the polygon A. Triangle B. Quadriangle C. Hexagon D. Quadrilateral