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# Angle Equations and Types

Test your knowledge of angle equations and types, including complementary, supplementary, right, obtuse, acute, reflex, and straight angles.

Created by
@BestKnownGothicArt

### ¿Cuál es el concepto geométrico que se utiliza para encontrar ángulos desconocidos en triángulos rectángulos?

Ángulos complementarios

### ¿Cuál es la característica principal de los ángulos suplementarios?

La suma de dos ángulos suplementarios es de 180 grados

Ángulo recto

## Study Notes

### Angle Equations

#### Complementary Angles

• Two angles that add up to 90°
• Example: ∠A + ∠B = 90°
• Each angle is called a complement of the other

#### Supplementary Angles

• Two angles that add up to 180°
• Example: ∠A + ∠B = 180°
• Each angle is called a supplement of the other

#### Right Angles

• An angle that measures 90°
• Formed by two perpendicular lines
• Example: ∠A = 90°

#### Obtuse Angles

• An angle greater than 90° but less than 180°
• Example: 120°, 150°, etc.

#### Acute Angles

• An angle less than 90°
• Example: 30°, 60°, etc.

#### Reflex Angles

• An angle greater than 180° but less than 360°
• Example: 210°, 240°, etc.

#### Straight Angles

• An angle that measures 180°
• Formed by two lines that lie in the same direction
• Example: ∠A = 180°

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