Angles and Their Types

Quel est le terme qui désigne la mesure d'un angle ?

Comment peut-on nommer un angle ?

Quelles sont les caractéristiques de deux angles adjacents ?

Quelle est la somme des amplitudes de deux angles complémentaires ?

Que désigne la bissectrice d'un angle ?

Deux angles sont appelés supplémentaires lorsque :

Comment sont définis les angles adjacents ?

Quel est le rayon utilisé pour tracer les arcs de cercle lors du report d'angles ?

Angles

An angle is the part of a plane between two rays with the same origin.
The measurement of an angle is called its amplitude, expressed in degrees.
To name an angle, use three points defining it, the letter of its vertex, or a Greek letter. Examples: BAC, CAB, α, A.

Types of Angles

Nul angle: 0°
Acute angle: Between 0° and 90°
Right angle: 90°
Obtuse angle: Between 90° and 180°
Straight angle: 180°
Reflex angle: Between 180° and 360°
Complete angle: 360°

Adjacent Angles

Adjacent angles share a common vertex and side, with the other sides on opposite sides of the common side.

Complementary Angles

Complementary angles are two angles whose sum of their amplitudes is 90°.

Supplementary Angles

Supplementary angles are two angles whose sum of their amplitudes is 180°.

Bisector of an Angle

The angle bisector is a line that divides an angle into two angles of equal amplitude.
To draw an angle bisector using a compass, follow these steps:
1. Draw an arc from the vertex of the angle, intersecting both sides.
2. From the intersection points, draw two arcs with the same radius, intersecting each other.
3. Draw a line from the vertex to the intersection point of the arcs. This line is the angle bisector.

Ce quiz couvre les différents types d'angles, y compris les angles nul, aigu, droit, obtus, et plus encore. Vous apprendrez également sur les angles adjacents, complémentaires, et supplémentaires. Testez vos connaissances sur les propriétés des angles et la façon de les nommer.