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3. Obtuse angle
When an angle measures more than 90 degrees, it is called an ‘Obtuse’ angle.
In the image, lines AB and BC form an angle ABC at the point of contact B, which measures
120 degrees.
Hence, angle ABC is an obtuse angle.
°
4. Straight angle
When an angle measures exactly 180 degrees, it is called a ‘Straight’ angle. A straight angle is a
straight line where the second line lies flat on the other side of the first line.
In the image, lines AB and BC form an angle ABC at the point of contact B which measures
180 degrees.
Hence, angle ABC is a straight angle.
5. Reflex angle
When an angle measures greater than 180 degrees, but smaller than 360 degrees, it is called an
‘Reflex’ angle. In the image, lines AB and BC form an angle ABC at the point of contact B which
measures 220 degrees.
Hence, angle ABC is a reflex angle.
Program to Find the Type of Angle
To create an AI Connect program to determine the type of the angle, create a project. In this project
create a Basic Coding activity. Then follow the given steps:
Step 1 Create a variable called ‘angle’. Drag out its ‘set’ block. Attach an ‘int’ block to it. Attach
an input block that asks the user for a number.
94 Computer Genius (V2.1)-VII

