Notes 5.2 – Areas of
Triangles, Parallelograms, and Trapezoids
Parts of a Triangle ,Trapezoid, and
Parallelogram
Base – any side (leg) can be a base of a figure
Altitude – a perpendicular segment from a vertex (base) to the base of a figure
Height – length of the altitude
Area Formulas
Triangle: A = ½ bh
Parallelogram: A = bh
Trapezoid: A = ½ (
)h