Theorems about Parallelograms
Geometry · Flashcards
GEOMETRY · FLASHCARDS
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QUESTION
What is the third angle if a triangle has angles
90
∘
90^\circ
9
0
∘
and
15
∘
15^\circ
1
5
∘
?
QUESTION
Find
B
C
BC
B
C
if
D
E
DE
D
E
is a midsegment parallel to
B
C
BC
B
C
and
D
E
=
3
2
DE=\frac{3}{2}
D
E
=
2
3
.
QUESTION
What must be true about points
D
D
D
and
E
E
E
to conclude
D
E
DE
D
E
is a midsegment in
△
A
B
C
\triangle ABC
△
A
B
C
?
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ANSWER
D
D
D
and
E
E
E
are midpoints of two sides of
△
A
B
C
\triangle ABC
△
A
B
C
. Midsegments require endpoints at midpoints of two triangle sides.
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