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Triangle ABC is similar to triangle LMN by the AA Similarity Postulate.

Also, m∠A = 108° and m∠C = 2(m∠M).

What is m∠M?

_________ °

Sagot :

Ginnydog13


A triangles angles have to add up to 180 degrees. So, 180-108= 72.    72/3=24m∠A=108      m∠C= 48           m∠M=24

108+48+24=180

boffeemadrid

Answer:

m∠M=24°

Step-by-step explanation:

The sum of all the angles of the triangle is equal to 180°. It is given that Triangle ABC is similar to triangle LMN by the AA similarity postulate, therefore, similar triangles have similar set of angles. If ∠A=108°, then ∠L will also be equal to 108°, ∠B=∠M  and ∠C=∠N by similarity of the triangles.

Now, let ∠M=x, then ∠B=x, also it is given that ∠C=2∠M, therefore by the sum property of the triangles,

∠A+∠B+∠C=180°

⇒108°+x+2x=180° (because ∠C=2∠M=2x)

⇒3x+108°=180°

⇒3x=180°-108°

⇒3x=72°

⇒x=24°

Therefore, m∠M=24°

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