Question

find triangle unknown marked angles​

Answer 1

Answer:

C = 40

a = 80

Step-by-step explanation:

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Answer 2

Answer:

•Sum of angles in a straight line is 180°

▪angle c+140°=180°

angle C=180-140

angle C=40°

▪angle b+60°=180°

angle b=180-60

angle b=120°

•Sum of angles in a triangle is 180°

▪ In the given triangle,

angle a+angle c+60°=180°

angle a + 40°+60°=180°

angle a+100°=180°

angle a = 180-100

angle a = 80°

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