The perimeter of a triangle is the measure around the triangle

= a + b + c

To find the area of a triangle:

The height = the perpendicular distance from the opposite vertex to the base

To find the area of a triangle:

The height = the perpendicular distance from the opposite vertex to the base

To find the area of a triangle:

The height = the perpendicular distance from the opposite vertex to the base

The area of this rectangle is height x base

To find the area of a triangle:

The height = the perpendicular distance from the opposite vertex to the base

The area of this rectangle is height x base

The area of the triangle is ½ the area of the rectangle

To find the area of a triangle:

The height = the perpendicular distance from the opposite vertex to the base

The area of this rectangle is height x base

The area of the triangle is ½ the area of the rectangle h

b

Area of triangle = ½ h b

examples:

area = ½ ( 3 )( 6 ) = 9 square units

area = ½ ( 4 )( 7 ) = 14 square units

area = ½ ( 5 )( 9 ) = 22 ½ square units

area = ½ ( h )( b )

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