Question

Angle of angle t……..

Answer 1

T = 139°

Explanation:

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

so

• 1 find the value of x

4x + 21x + 13 + 3x - 1 = 180

28x = 180 - 13 + 1

28x = 168

x = 168 : 28

x = 6

• find angle T

21x + 13 =

21 x 6 + 13 =

126 + 13 =

139°

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check

• angle S

4 x 6 = 24°

• Angle U

3 x 6 - 1 = 17°

• sum the angles

139 + 24 + 17 =

180°

the answer is good