Circles Homework Review Mental Math Solve these problems in your math notebook 5+5= 50+40= 1+8= 60+70= 8+6= 70+80= 9+3= Math Message Take a sheet of paper, read the directions carefully, and answer the question. Lesson Components • A circle is the set of all points that go around a center point the same distance away. Find the center point of the circles. Circles • The radius of a circle is a line segment from the center of a circle to any point on the circle Circles • Draw the radius of each circle Diameter • The diameter of a circle is a line segment from one point on a circle to another point that goes through the center of the circle Diameter • Draw the diameter on these circles Math journal p. 18 Concentric circles • Circles with the same center are called CONCENTRIC CIRCLES They do not intersect or cross Wrapping it all up • Use your compass to draw a circle and label the radius • Use your compass to draw a circle and label the diameter • Use your compass to draw a set of concentric circles Tonight’s Homework • Study link 1.7 Math Boxes

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# 1.7 Circle Constructions