virtualnerd.com/pre-algebra/perimeter-area-volume/perimeter-and-area/area-formulas-examples/trapezoid-area-example

area; trapezoid; height; base one; base two; formula; plug in; trapezoid area ... We know that calculators are everywhere, but that doesn't mean that long division ...

www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT2_RESOURCE/U07_L2_T1_text_final.html

The prefix “quad-” means “four,” and “lateral” is derived from the Latin word for .... If the non-parallel sides of a trapezoid are congruent, the trapezoid is called an ...

mathcs.clarku.edu/~djoyce/elements/bookI/defI22.html

Figure D is a trapezium (also called a trapeze or trapezoid). ... area, which he does not define, but clearly means quadrilateral with parallel opposite sides.

en.wikibooks.org/wiki/Geometry/Trapezoids

If the two non-parallel sides are equal, the trapezoid is called an isosceles trapezoid. .... Geometry/An Alternative Way and Alternative Geometric Means of ...

www.mathedleadership.org/docs/ccss/itp/9-12_Properties-of-Quadrilaterals-Modeling-Using-Tools_Resources.pdf

start by explaining to themselves the meaning of a problem and looking for entry points to its solution. ... continually ask themselves, “Does this make sense?”.

math.tutorvista.com/geometry/altitude-of-a-trapezoid.html

In Euclidean geometry, a number of shapes and various related geometrical problems are learnt. A quadrilateral is an important shape which is widely seen not ...

www.brightstorm.com/math/geometry/polygons/trapezoid-midsegment-properties

A midsegment of a trapezoid is the line segment connecting the midpoints of the two non-parallel sides of a trapezoid. A trapezoid midsegment is parallel to the ...

www.wordreference.com/es/translation.asp?tranword=trapezoid

trapezoid - Translation to Spanish, pronunciation, and forum discussions.

www.oercommons.org/courseware/lesson/2402/overview

The area of the parallelogram is (b1 + b2)h, so the area of the trapezoid is one- half of this area. Thus ... What does it mean to keep the height or base constant?