Question

BRAINLIEST IF YOU ANSWER FAST AND CORRECT!!! ALSO 100 POINTS!

Answer 1

Sum of two interiors=exterior

$\\ \rm\Rrightarrow m$

$\\ \rm\Rrightarrow 38+90=n$

$\\ \rm\Rrightarrow n=128°$

Option B

Answer 2

Solution:

We know that:

• $\angle A = 38\°$
• $\angle B = 90\°$
• $\angle A + \angle B + \angle C = 180$
• $\angle C + n = 180$

Step by step calculations:

1. Substitute the angles in the equation "∠A + ∠B + ∠C = 180" to find ∠C:

• $\angle A + \angle B + \angle C = 180$
• => $38 + 90 + \angle C = 180$
• => $128 + \angle C = 180$
• => $\angle C = 180 - 128$
• => $\bold{\angle C = 52}$

2. Substitute ∠C in the equation "∠C + n = 180" to find n:

• $\angle C + n = 180$
• => $52 + n = 180$
• => $n = 180 - 52$
• => $\bold{n = 128}$