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MA19.4.26
Decompose an angle into non-overlapping parts to demonstrate that the angle measure of the whole is the sum of the angle measures of the parts.

Decompose an angle into non-overlapping parts to demonstrate that the angle measure of the whole is the sum of the angle measures of the parts.

### Unpacked Content

## UP:MA19.4.26

### Vocabulary

- Decompose
- Angle
- Non-overlapping
- Angle measure
- Sum
- Diagram
- Adjacent
- Compose
- Degrees

### Knowledge

- Angles are measured in degrees from 0 to 360.
- Protractor orientation does not affect an angle measurement.

### Skills

- Decompose an angle into non-overlapping parts and demonstrate that the sum of the angle measure parts is the same as the measure of the whole angle.
- Use addition and subtraction to find unknown angles on a diagram in real-world or mathematical problems.

### Understanding

- The rotation of an angle is measured by the number of one-degree angles that exactly cover the rotation of the angle.
- Angle measurement is additive of the non-overlapping parts of a decomposed angle.