Page 10 - Flip Book_Aliyah Rumini Larasati_4192111004

Figure 10. Acute, obtuse, right angles, straight angles and right angles

By paying attention to the size of each angle, then the types of angles, namely:

1. An acute (lancip) angle has an angle measure between 0° and 90°

2. An obtuse (tumpul) angle has an angle measure between 90° and 180°
3. A straight (lurus) angle has an angle measure of 180°

4. A right (siku-siku) angle has an angle measure of 90°
5. The reflex angle has an angle measure between 180° and 360°

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