Finding Missing Angle - Determine the value of 'A' - Answer Key

Sep 30, 2026

Uploaded by Liam

Angle-measurement worksheets focused on determining the value of the unknown angle labeled 'A'. Problems present given angles such as 90°, 78°, 33°, 50°, 32°, and other angle configurations, requiring students to compute missing measures. An included answer key provides the correct values for each numbered item, supporting self-checking and instructional review. Content is presented as math practice sheets linked to CommonCoreSheets.com.

LanguageEnglish

CategoryExam

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Determine the value of 'A'

Answer Key

Finding Missing Angle Name: | Determine the value of 'A'. | | | | | | | | | | | | | | | Answers | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1) | | 2)
90
78
A° 33°
| | | | | | | | | | | | | 1. | | | | | | | | | | | | | | | | | | | | | | | 2. | | | | | | | | 3) | | | | | | 4) | | | | | | | | | 3.
4.
5. | | | | | | | | 5)

6)

7) 157 8)

| | | | | | | | | | | | | | | 6.
7.
8.
9.
10.
11.
12. | | | | | | | | 9) A 10) 130 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | 90°
| | | | 32°
A°

| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 11) 12) | | | | | | | | | | | | | | | | | | | | | | | 50° | | | | 93
| | | | 46° | A
| | | | | | | | | | | | | |
A° | | | | | | | | 47 ° | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Math | | | [www.CommonCoreSheets.com](www.CommonCoreSheets.com) | | | | 5 | 1-10
11-12 | | | 92 | 83 | 75 | 67 | | 58 | 50 | 42 | 33 | 25 | 17 | | | | | | | | | | | | | 8 | 0 | | | | | | | | | | Finding Missing Angle Name: Answer Key | Determine the value of 'A'. | | | | | | | | | 1. | Answers
55 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1) | | 2)
90
78
A° 33°
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2. | 45 | | | | | | | | | | | | | | 3)
5)
7) |
4)

A 6)
157 8)
| | | | | | | | 3.
4.
5.
6.
7.
8.
9.
10.
11.
12. | 42 | | | | | | | | | | | | 46 | | | | | | | | | | | | 138 | | | | | | | | | | | | 140 | | | | | | | | | | | | 60 | | | | | | | | | | | | 116 | | | | | | | | | | | | 146 | | | | | | | | | | | | 98 | | | | | | | | | | | | 43 | | | | | | | | | | | | 93 | | | | | | | | | | | | | | 9) A 10) 130 | | | | | | | | | | | | | | | | | | | | | | | |
| | 90°
| | | 32°
A°

| | | | | | | | | | | | | | | | | | | 11) 12) | | | | | | | | | | | | 50° | | | 93
| | | 46° | A
| | | | |
A° | | | | | | 47 ° | | | | | | | | | | | | | | | | | Math [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 5 1-10 92 11-12 8 83 0 75 67 58 50 42 33 25 17 Finding Missing Angle Name: | Determine the value of 'A'. | | | Answers
1.
2.
3.
4.
5.
6.
7.
8. | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | |
140 55 60 42
46 116 138 45
1)
3)
5)
7)

2)

4)

A 6)
157 8)

| | | | | | | | | | 1-8 | 88 | 75 | 63 | 50 | 38 | 25 | 13 | 0 | Math Modified [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 5

FAQs

What does the worksheet ask students to find?

Students determine the value of the missing angle labeled 'A' in each problem.

How are the problems presented?

The worksheet lists multiple numbered angle questions showing given angle measures and requiring computation of 'A'.

What is included besides the questions?

An Answer Key is provided with the correct values corresponding to the numbered problems.

Sep 30, 2026

Uploaded by Liam