15. PARALLELOGRAM TRAPEZOID
Identify the following pictures as parallelogram,
trapezoid or trapezium and give the specific name of
the given quadrilateral.
SQUARE
ISOSCELES TRAPEZOID
18. Sia, Lucy O., et. al., 21st Century Mathematics:
Second Year, Quezon City, Phoenix Publishing
House, Inc.
Orines, F. B., Mercado, P. C. & Suzara, J. V.,
(2003), Geometry: Third Year High School,
Quezon City, Phoenix Publishing House, Inc.