I'll solve this worksheet on finding missing angles. The key concept here is that when two angles are adjacent and form a larger angle, the measure of the larger angle equals the sum of the measures of the smaller angles.
Let me go through each problem one by one:
1) Angle A + 58° = 88°, so A = 88° - 58° = 30°
2) 36° + A = 125°, so A = 125° - 36° = 89°
3) 62° + A = 86°, so A = 86° - 62° = 24°
4) 64° + A = 98°, so A = 98° - 64° = 34°
5) A + 78° = 111°, so A = 111° - 78° = 33°
6) 89° + A = 120°, so A = 120° - 89° = 31°
7) 36° + A = 133°, so A = 133° - 36° = 97°
8) 51° + A = 114°, so A = 114° - 51° = 63°
9) A + 63° = 95°, so A = 95° - 63° = 32°
10) A + 43° = 135°, so A = 135° - 43° = 92°
11) 45° + A = 130°, so A = 130° - 45° = 85°
12) A + 94° = 140°, so A = 140° - 94° = 46°
The solution for each problem is found by subtracting the known smaller angle from the total angle to find the missing angle A.
Parent Tip: Review the logic above to help your child master the concept of missing angle measurement worksheet.
