Respuesta :
Answer:
B) m∠B = 60°
Step-by-step explanation:
m∠A + m∠B + m∠C = 180°
2x + 3x + 4x = 180
9x = 180
x = 20
m∠A = 40°
m∠B = 60°
m∠C = 80°
The true statements about the triangle are as follows:
m∠A = 40°
m∠B = 60°
Triangle
The sum of angles in a triangle is equals to 180 degrees. Therefore,
m∠A + m∠B + m∠C = 180°
m∠A = 2x
m∠B = 3x
m∠C = 4x
Therefore,
2x + 3x + 4x = 180
9x = 180
divide both sides by 9
x = 180 / 9
x = 20
m∠A = 2(20) = 40°
m∠B = 3(20) = 60°
m∠C = 4(20) = 80°
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