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ratelena [41]
3 years ago
10

Given: ∠A ≅∠D, ∠B ≅∠E m∠C = x, m∠F = 2x−30° Find: m∠C

Mathematics
2 answers:
makkiz [27]3 years ago
6 0

Since <A = <D and <B = <E, it must be true that the third angles <C = <F  (the triangles are similar).

If <C = x and <F = 2x-30  then you need to find x for which <C = <F is true:

x = 2x-30

and that holds for x=30

So m<C=30 degrees

kupik [55]3 years ago
4 0

Answer:

m\angle c = 30^\circ            

Step-by-step explanation:

We are given the following information in the question:

ΔABC and ΔDEF

\angle A \cong \angle D\\\angle B \cong \angle E\\m\angle c = x \\m\angle F = 2x-30

According to angle sum property of the triangle the sum of all angles of triangle is equal to 180 degrees.

Since two corresponding angles of the two triangle are equal, therefore the third angle is also equal.

x = 2x - 30\\\Rightarrow x = 30

Thus,

m\angle c = 30^\circ

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