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3 years ago

Pleeeeeeeaaaseee help. I need to find the exterior angle measurement. I will mark brainliest

Mathematics

1 answer:

Mariana [72]3 years ago

5 0

Answer:

2a = 108

Step-by-step explanation:

the 3 angles of the triangle add to 180

lets call the unknown angle in the triangle y

a+10 + y + 44 = 180

we also know that 2a+ y = 180 because it makes a straight line

solve this for y by subtracting 2a from each side

2a +y = 180

y = 180 -2a

now we can substitute this into the triangle equation

a+10 + y + 44 = 180

a+10 + 180 -2a + 44 = 180

combine like terms

-a +234 = 180

subtract 234 from each side

-a = --54

divide each side by -1

a =54

the exterior angle is 2a

2* 54

108

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