Angles and Degrees
Grade 4 · Math · Measurement and Geometry · California, USA
Lesson Summary
An angle is formed where two lines meet. Angles are measured in degrees using a protractor.
Explanation
A right angle is exactly 90 degrees and looks like the corner of a square. An acute angle is smaller than 90 degrees, and an obtuse angle is larger than 90 degrees but smaller than 180 degrees. A straight angle is exactly 180 degrees and looks like a straight line. You can use a protractor to measure angles by lining up one side of the angle with the zero mark and reading where the other side points.
Practice Questions
Q1: Is a 45-degree angle acute, right, or obtuse?
Answer: Acute, because it is less than 90 degrees.
Q2: What type of angle measures exactly 90 degrees?
Answer: A right angle.
Q3: Is a 120-degree angle acute or obtuse?
Answer: Obtuse, because it is greater than 90 degrees.
People Also Ask
What is Angles and Degrees in Grade 4 Math?+
Angles and Degrees is a lesson in the Measurement and Geometry chapter of Grade 4 Math. It is part of the California, USA school curriculum and covers key concepts that students need to understand at this level.
What grade level covers Angles and Degrees?+
Angles and Degrees is taught in Grade 4 as part of the Math curriculum in California, USA.
How can I help my child with Measurement and Geometry in Math?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Measurement and Geometry topics.