Introduction to Arcs - Grade 6 Math
This worksheet introduces sixth-grade students to the concept of arcs in circles, focusing on identifying, measuring, and understanding their properties.
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Introduction to Arcs
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Read each question carefully and answer to the best of your ability. Use the diagrams provided to help you understand the concepts of arcs.
An arc is a portion of the circumference of a circle. Imagine cutting a piece of a circle's edge – that piece is an arc! Arcs are measured in degrees, just like angles.
1. The distance around a circle is called its .
2. A line segment from the center of a circle to any point on its circumference is called a .
3. A line segment that passes through the center of a circle and has endpoints on the circumference is called a .
4. What is an arc that measures exactly 180 degrees called?
Minor Arc
Major Arc
Semicircle
Full Arc
The measure of an arc is equal to the measure of its central angle. A full circle is 360 degrees.
5. In the circle above, what is the measure of arc AB?
6. A circle is divided into three arcs. Two of the arcs measure 90 degrees and 150 degrees. What is the measure of the third arc?
7. A semicircle is an arc that measures less than 180 degrees.
True
False