Question

Find the measure of angle A.

Answer 1

D. 45° is yr ans

Explanation:

• 8x+5+18x+45=180°{ sum of angle of triangle}
• 26x+50=180°
• 26x=180-50
• x=130/26
• x=5°

measure of angle of triangle=8x+5

• 8×5+5
• 40+5
• 45°

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Answer 2

Option D is correct

Explanation:

Hint :

Sum of angles in triangle= 180°

Simplify:

`(8x+5)+18x+45=180`

`26x+50=180`

`26x=180−50`

`26x=130`

`x = (130)/(26)`

`x = 5`

Measure of angle :
`18x+5 = 18(5)+5 \\ = 40+5 \\ =45`

`18x = x + 18 \\ = 5 + 18 \\ 23`

Hope it is helpful....