An angle is a set of points in a plane bordered by two half-lines that share the same origin. The document provides examples of different types of angles including acute, obtuse, and right angles using clocks. The document was done by Anarita Maria Diana, a student in the 5th grade of EB2.3 de Azeitão in Portugal.

2. WHAT IS AN ANGLE?

3. SOLUTION
What is an angle?
An angle is a set of points in
the plan bordered by two
half-lines of the same origin.

5. SOLUTIONS
Clock A has an acute
angle, clock B has an
obtuse angle, clocks C
and D have a right
angle.

6. D O N E BY:
A N A R I TA
MARIA DIANA
5º D
EB2.3 DE AZEITÃO;
P O RT U G A L