In Euclidean geometry, an isosceles trapezoid (isosceles trapezium in British English) is a convex quadrilateral with a line of symmetry bisecting one pair of opposite sides. It is a special case of a trapezoid. Alternatively, it can be defined as a trapezoid in which both legs and both base angles are of the same measure. Note that a non-rectangular parallelogram is not an isosceles trapezoid because of the second condition, or because it has no line of symmetry. In any isosceles trapezoid two opposite sides (the bases) are parallel, and the two other sides (the legs) are of equal length (properties shared with the parallelogram). The diagonals are also of equal length. The base angles of an isosceles trapezoid are equal in measure (there are in fact two pairs of equal base angles, where one base angle is the supplementary angle of a base angle at the other base).
are the bases of a trapezoid always parallel?
OPTIONS:
- no
- yes
+++++
Answer: yes

Latin America can be subdivided into several subregions based on geography, politics, demographics and culture. If defined as all of the Americas south of the United States, the basic geographical subregions are North America, Central America, the Caribbean and South America; the latter contains further politico-geographical subdivisions such as the Southern Cone, the Guianas and the Andean states. It may be subdivided on linguistic grounds into Hispanic America, Portuguese America and French America.
is latin america the same as central america?
OPTIONS:
- no
- yes
+++++
Answer: no

Between 1920 and 1939, a total of 63 countries became member states of the League of Nations. The Covenant forming the League of Nations was included in the Treaty of Versailles and came into force on 10 January 1920. The League of Nations was dissolved on 18 April 1946, when its assets and responsibilities were transferred to the United Nations.
was the league of nations included in the treaty of versailles?
OPTIONS:
- no
- yes
+++++
Answer:
yes