3 years ago

Directions: Solve for x, then find each angle measure

Mathematics

1 answer:

kirill [66]3 years ago

8 0

Answer:

Step-by-step explanation:

the sum of the interior angles of a triangle is 180°

9x + 3 + 11x - 21 + 5x - 2 = 180

25x = 180 - 3 + 21 + 2

25x = 200

x = 200 : 25

x = 8

----------------

E = 9 * 8 + 3 = 75°

D = 5 * 8 -2 = 38°

F = 11 * 8 - 21 = 67

-------------------------

check

75 + 37 + 67 = 180°

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