Height altitude 2a b 1 b 2 Where a area and b1 b2 are the 2 bases. A a b x h 2 When a b with both lengths the same then c d h. Area of rectangle base height 4 8 Area of triangle base height 2.
Its the same one you use for the area of a rectangle.
To find the height and base of the trapezoid that is used in the area of a trapezoid formula we need to use the following formulas. In Area 3 the triangle area part of the Trapezoid is exactly one half of Area 3 Therefore the area of the Trapezoid is equal to Area of larger rectangle Area of smaller rectangle 2. Area ½ h b1 b2. It explains how to find the area given everything.