Question

Find the measure of angle A.

Answer 1

Answer:

D. 45° is yr ans

Step-by-step 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°

hope it helps.

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Answer 2

Answer:

Option D is correct

Step-by-step explanation:

Hint :

Sum of angles in triangle= 180°

Simplify:

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

$26x+50=180$

$26x=180−50$

$26x=130$

$x = \frac{130}{26}$

$x = 5$

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

$18x = x + 18 \\ = 5 + 18 \\ 23$

Hope it is helpful....