Respuesta :

vick9229

Answer:

m<A=40°

m<B=55°

m<C=85°

Step-by-step explanation:

Add up all the angles to equal 180 because all triangles add up to 180.

(2x+5)+(x+15)+x=180

Simplify.

4x+20=180

Solve for x.

x=40.

Plug x into the equations. Hope this helps.

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