To solve the problem of naming each angle as
obtuse,
right, or
acute, we need to understand the definitions of these types of angles:
1.
Acute Angle: An angle that measures less than 90 degrees.
2.
Right Angle: An angle that measures exactly 90 degrees.
3.
Obtuse Angle: An angle that measures more than 90 degrees but less than 180 degrees.
Now, let's analyze each angle in the image step by step:
Image Analysis:
#### Top Row:
1.
First Angle: This angle forms a perfect square corner. It is a
right angle.
-
Answer: Right
2.
Second Angle: This angle is smaller than a right angle. It is
acute.
-
Answer: Acute
3.
Third Angle: This angle is larger than a right angle but less than a straight line. It is
obtuse.
-
Answer: Obtuse
#### Middle Row:
4.
Fourth Angle: This angle is smaller than a right angle. It is
acute.
-
Answer: Acute
5.
Fifth Angle: This angle is larger than a right angle but less than a straight line. It is
obtuse.
-
Answer: Obtuse
6.
Sixth Angle: This angle is larger than a right angle but less than a straight line. It is
obtuse.
-
Answer: Obtuse
#### Bottom Row:
7.
Seventh Angle: This angle is smaller than a right angle. It is
acute.
-
Answer: Acute
8.
Eighth Angle: This angle is larger than a right angle but less than a straight line. It is
obtuse.
-
Answer: Obtuse
9.
Ninth Angle: This angle is smaller than a right angle. It is
acute.
-
Answer: Acute
Final Answers:
1. Right
2. Acute
3. Obtuse
4. Acute
5. Obtuse
6. Obtuse
7. Acute
8. Obtuse
9. Acute
Boxed Answer:
\[
\boxed{\text{Right, Acute, Obtuse, Acute, Obtuse, Obtuse, Acute, Obtuse, Acute}}
\]
Parent Tip: Review the logic above to help your child master the concept of angles 4th grade worksheet.
