Question

I know it's a lot but help please!!!!!!

Answer 1

• 105°; -7°; -3°; 12°; 17

Explanation:

1. Exterior angle is the sum of two non-adjacent interior angles

• 25° + 80° = 105°

2. Sum of angles = 180°

• x + 59° + x + 51° + 84° = 180°
• 2x + 194° = 180°
• 2x = -14°
• x = -7°

3. Same as above

• 55° + x + 74° + 54° = 180°
• x + 183° = 180°
• x = 180° - 183°
• x = -3°

4. Exterior angle as above:

• 4x + 2° + 30° = 80°
• 4x = 48°
• x = 12°

5. Perimeter is the sum of side lengths

• 8x - 4 + 9x + 4 + 4x + 17 = 374
• 21x + 17 = 374
• 21x = 357
• x = 357/21
• x = 17