Circle Graph warm up Draw a circle. How many degrees are in a circle? Split the circle in half. How many degrees are in half a circle? Split the circle into quarters. How many degrees are in each quarter? Split the circle into eighths. How many degrees are in each eighth? 360° 180° 45° 90° 90° 180° 180° 45°

Example # 1: Carl has an orchard cotaining 24 apple trees, 20 peach trees, 16 cherry trees, 12 apricot trees, and 8 plum trees. Represent Carl’s data using a circle graph. Step 1: Find the total # of trees.__________________ Step 2: Fill in the chart. 80 Tree Number Percent Angle Apple 24 24/ 80= 30% (.30)(360) = 108° Peach Cherry Apricot Plum 20 20/ 80= 25% (.25)(360) = 90° 16 16/ 80= 20% (.20)(360) = 72° 12 12/ 80= 15% (.15)(360) = 54° 8 8/ 80= 10% (.10)(360) = 36°

Tree Number Percent Angle Apple 24 30% 108° Peach 20 25% 90° Cherry 16 20% 72° Apricot 12 15% 54° Plum 8 10% 36° Plum and Apricot add up to 90°. Apple and Cherry add up to 180°. Cherry 20% Peach 25% Plum 10% Apple 30% Apricot 15%