Q11Written answer
Measure and classify each angle:

| Angle | Measure | Type | |
| ∠AOB | |||
| ∠AOC | |||
| ∠BOC | |||
| ∠DOC | |||
| ∠DOA | |||
| ∠DOB | |||
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Worked solution
| Angle | Measure | Type |
| ∠AOB | 400 | Acute |
| ∠AOC | 1250 | Obtuse |
| ∠BOC | 850 | Acute |
| ∠DOC | 950 | Obtuse |
| ∠DOA | 1400 | Obtuse |
| ∠DOB | 1800 | Straight |