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Ed puzzle what are all the angles for#5

Ed Puzzle What Are All The Angles For5 class=

Sagot :

sqdancefan

9514 1404 393

Answer:

  30°, 60°, 90°

Step-by-step explanation:

The value of x = 10 is correctly found. Then the angles are ...

  3x = 3(10) = 30°

  7x -10 = 7(10) -10 = 70 -10 = 60°

  and the right angle: 90°

The angles shown in figure 5 are 30°, 60°, 90°.

_____

Additional comment

The answer choices make no sense, as none of them has a sum of 180°. The entire point of the exercise is that the sum of angles in a triangle is 180°.

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