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Part A: find the value for x:
Part B: what is the value of angle A?

Part A: find the value for x: Part B: what is the value of angle A?-example-1
User Periklis
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1 Answer

14 votes

Answer:

part A:

If ABC is a triangle then,

2x+4+2x-9+x=180degree

or, 5x-5=180degree

or, 5x=(180+5)degree

or, 5x= 185degree

or, x=185÷5 = 37degree ans.

PartB

now put the value of x in angle A

i.e angle A = 2x-9

or, angle A= (2×37) - 9

or, angle A= 74 - 9

therefore, angle A= 65degree ans.

User Loochie
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6.9k points