# Area Triangle

Document Sample

```					www.mathxtc.com     Area of a Triangle
• This is one in a series of Powerpoint slideshows to
illustrate how to calculate the area of various 2-D
shapes.
Parallelogram.
• After that select any of Triangle, Trapezium and
Circle.
• Please feel free to copy and modify any of these
slide shows, but make sure you acknowledge the
author when doing so.

TRIANGLE

L=length                                                         H=height
What is the area
of this triangle?

W=width

TRIANGLE

L=length                                                          H=height
What is the area
of this triangle?

W=width

COPY THIS!
TRIANGLE

L=length                                                         H=height
What is the area
of this triangle?

W=width

PASTE HERE!
TRIANGLE

L=length                                                         H=height
What is the area
of this triangle?

W=width

FLIP VERTICALLY!
TRIANGLE

L=length                                                         H=height
What is the area
of this triangle?

W=width

FLIP HORIZONTALLY!
TRIANGLE

L=length                                                         H=height
What is the area
of this triangle?

W=width

TRANSLATE TO HERE!
TRIANGLE

L=length   The area of the triangle                        H=height
is ½ the area of this
parallelogram?

W=width

TRIANGLE

H=height

Area = ½ (Width x Height)
(perpendicular height H)

W=width

TRIANGLE

H=height

Area = ½ (Width x Height)
(perpendicular height H)

W=width