To solve the problem of classifying each angle as
right,
acute,
obtuse,
reflex, or
straight, we need to understand the definitions of these types of angles:
1.
Right Angle: An angle that measures exactly 90 degrees.
2.
Acute Angle: An angle that measures less than 90 degrees.
3.
Obtuse Angle: An angle that measures more than 90 degrees but less than 180 degrees.
4.
Reflex Angle: An angle that measures more than 180 degrees but less than 360 degrees.
5.
Straight Angle: An angle that measures exactly 180 degrees.
Now, let's classify each angle in the image step by step:
Row 1:
1.
Angle: This is a right angle (exactly 90 degrees).
-
Classification: Right
2.
Angle: This is an acute angle (less than 90 degrees).
-
Classification: Acute
3.
Angle: This is an obtuse angle (more than 90 degrees but less than 180 degrees).
-
Classification: Obtuse
Row 2:
4.
Angle: This is a reflex angle (more than 180 degrees but less than 360 degrees).
-
Classification: Reflex
5.
Angle: This is a right angle (exactly 90 degrees).
-
Classification: Right
6.
Angle: This is an acute angle (less than 90 degrees).
-
Classification: Acute
Row 3:
7.
Angle: This is a straight angle (exactly 180 degrees).
-
Classification: Straight
8.
Angle: This is a reflex angle (more than 180 degrees but less than 360 degrees).
-
Classification: Reflex
9.
Angle: This is an obtuse angle (more than 90 degrees but less than 180 degrees).
-
Classification: Obtuse
Row 4:
10.
Angle: This is an obtuse angle (more than 90 degrees but less than 180 degrees).
-
Classification: Obtuse
11.
Angle: This is an acute angle (less than 90 degrees).
-
Classification: Acute
12.
Angle: This is a reflex angle (more than 180 degrees but less than 360 degrees).
-
Classification: Reflex
Row 5:
13.
Angle: This is an obtuse angle (more than 90 degrees but less than 180 degrees).
-
Classification: Obtuse
14.
Angle: This is a right angle (exactly 90 degrees).
-
Classification: Right
15.
Angle: This is a reflex angle (more than 180 degrees but less than 360 degrees).
-
Classification: Reflex
Final Answer:
\[
\boxed{
\begin{array}{ccc}
\text{Right} & \text{Acute} & \text{Obtuse} \\
\text{Reflex} & \text{Right} & \text{Acute} \\
\text{Straight} & \text{Reflex} & \text{Obtuse} \\
\text{Obtuse} & \text{Acute} & \text{Reflex} \\
\text{Obtuse} & \text{Right} & \text{Reflex} \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of identifying angles worksheet.
