symonec608 symonec608

15-08-2021
Mathematics

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What is the measure of B?

Select the best answer from the choices provided.
A.33°
B. 57
C. 770
D.123

What is the measure of B Select the best answer from the choices provided A33 B 57 C 770 D123 class=

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wegnerkolmp2741o wegnerkolmp2741o

15-08-2021

Answer:

B =57

Step-by-step explanation:

The sum of the angles of a triangle is 180

A+B+C = 180

58+B+65 = 180

123+B = 180

B = 180-123

B =57

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Аноним Аноним

16-08-2021

The angle sum property of a triangle:

The total measure of the three angles of a triangle is 180°

∠A + ∠B + ∠C = 180°

∠A = 58°
∠B = 65°
∠C = x

⇛58° + 65° + x = 180°

⇛123° + x = 180°

⇛x = 180° - 123°

⇛x = 57°

Option B is the correct answer

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