Transcript Trapezoids - Vision Charter School

Trapezoids
Section 8-6
trapezoid – a quadrilateral with
exactly one pair of parallel sides
The parallel sides are called bases.
The nonparallel sides are called legs
base
leg
leg
base
isosceles trapezoid – a
trapezoid that has congruent
legs
Thms. 8-18 & 8-19
Both
pairs of base angles of an
isosceles trapezoid are congruent.
The diagonals of an isosceles
trapezoid are congruent.

B
A
AC
D
C

BD
The median of a trapezoid is the
segment that joins the midpoints of
its legs.
Theorem 8-20
The
median of a trapezoid is
parallel to the bases, and its
measure is one-half the sum of
the measures of the bases.
Joke Time
What’s big, gray, and wears glass
slippers?
Cinderellaphant
Why do you rarely find mathematicians spending time
at the beach?
Because they have sine and cosine to get a tan and
don't need the sun!