A trapezoid is shape with four sides. In mathematics, the knowledge of trapezoid is governed by two schools of thought viz: inclusive and exclusive definition. The former presents the trapezoid as a four-sided shape with only a pair parallel sides. The later presents it as a four-sided shape with more than one pair of parallel sides. Show your mastery of Euclidean geometry by answering the following questions.
Four triangles
Two triangles
A triangle
Six triangles
1
2
90
0
180 degrees
170 degrees
165 degrees
45 degrees
Two parts
Four parts
Six parts
Eight parts
Four adjacent right angles
Six adjacent right angles
Eight adjacent right angles
Two adjacent right angles
Concave
Convex
Supplementary
Complementary
Right trapezoid
Acute trapezoid
Complementary trapezoid
Left trapezoid
Two
Eight
Four
Six
Incircle
Right angle
Vertice
Circumference
Pythagoras theorem
Sine law
Commutative law
Cosine law