Let’s solve each problem one by one. In every case, we’re looking at two angles that together make up a larger angle — and the big angle is given. So to find “A”, we just subtract the smaller known angle from the total.
We’ll go step by step:
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1) Total = 88°, Small angle = 58°
→ A = 88 - 58 =
30°
2) Total = 125°, Small angle = 36°
→ A = 125 - 36 =
89°
3) Total = 86°, Small angle = 62°
→ A = 86 - 62 =
24°
4) Total = 98°, Small angle = 64°
→ A = 98 - 64 =
34°
5) Total = 111°, Small angle = 78°
→ A = 111 - 78 =
33°
6) Total = 120°, Small angle = 89°
→ A = 120 - 89 =
31°
7) Total = 133°, Small angle = 36°
→ A = 133 - 36 =
97°
8) Total = 114°, Small angle = 51°
→ A = 114 - 51 =
63°
9) Total = 95°, Small angle = 63°
→ A = 95 - 63 =
32°
10) Total = 135°, Small angle = 43°
→ A = 135 - 43 =
92°
11) Total = 130°, Small angle = 45°
→ A = 130 - 45 =
85°
12) Total = 140°, Small angle = 94°
→ A = 140 - 94 =
46°
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Final Answer:
1) 30°
2) 89°
3) 24°
4) 34°
5) 33°
6) 31°
7) 97°
8) 63°
9) 32°
10) 92°
11) 85°
12) 46°
Parent Tip: Review the logic above to help your child master the concept of missing angle measures worksheet.
