Triangle Angle Relationships
Pre-Algebra · Flashcards
PRE-ALGEBRA · FLASHCARDS
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QUESTION
How are the base angles of an isosceles triangle related?
QUESTION
An exterior angle of a triangle measures
130
∘
130^\circ
13
0
∘
. What is the adjacent interior angle?
QUESTION
The angles of a triangle are in the ratio
2
:
3
:
4
2 : 3 : 4
2
:
3
:
4
. What are their measures?
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ANSWER
40
∘
40^\circ
4
0
∘
,
60
∘
60^\circ
6
0
∘
and
80
∘
80^\circ
8
0
∘
. The 9 parts share
180
∘
180^\circ
18
0
∘
, so each part is
20
∘
20^\circ
2
0
∘
.
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