joan has a piece of material for making a costume she needs to cut it as shown what is the angle measure of the piece left over?
2 answers:
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Answer:
A. DEF where
and
.
Step-by-step explanation:
At first we must keep in mind that two triangles are similar when they have same angle configuration, that is, each pair of angles is congruent. If ABC and
DEF, then
and
. Hence,
and
.
In a nutshell, correct answer is A.