Polygons

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# Polygons - PowerPoint PPT Presentation

Polygons. Abney V. Martinez. Polygon. A polygon is a closed plane figure made up of line segments. Each line segment is a side . The point where the sides meet is called the vertex . More than one vertex are vertices . . Tell which shapes are polygons. .

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## PowerPoint Slideshow about ' Polygons' - kaloni

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Presentation Transcript

### Polygons

Abney

V. Martinez

Polygon
• A polygon is a closed plane figure made up of line segments.
• Each line segment is a side.
• The point where the sides meet is called the vertex.
• More than one vertex are vertices.

Tell which shapes are polygons.

Triangles are polygons. We can classify them by their sides.

Scalene, equilateral, isosceles

Scalene triangles have no sides the same length.

Isosceles triangles

2 sides the same length

2 eyes – 2 equal sides

Equilateral Triangle
• Equal sides

All sides the same length

Triangles can be classified by angles
• Right triangle
• Acute triangle
• Obtuse triangle

Right triangle

A right triangle has a right angle

A right angle makes a perfect square corner.

Acute triangles

Acute angles _ less than 90 degrees

Just look at the angles – not the sides

Obtuse Triangles

Obtuse – greater than 90 degrees

Can you tell which angle is obtuse?