Which figure is a line? Draw a different line.
Line MN. Students draw a line.
Which figure is a ray? Draw a different ray.
Ray PQ. Students draw a ray.
Which figure is a point? Draw a different point.
Point S. Students draw a point.
Which figure is a line segment? Draw a different line segment.
Line segment UV. Students draw a line segment.
How is an angle related to a circle?
Possible response: An angle describes a section of a circle, or part of a rotation around a circle. There are 360 degrees in 1 whole circle. I can measure an angle by counting how many degrees fit inside it.
Which figure is a right angle? Draw a different right angle.
Angle R. Students draw a right angle.
What is the measure of a right angle?
Which figure is an acute angle? Draw a different acute angle.
Angle L. Students draw an acute angle.
What is the measure of any angle that is acute?
Between 1° and 89°.
Which figure is an obtuse angle? Draw a different obtuse angle.
Angle T. Students draw an obtuse angle.
What is the possible range of measures for obtuse angles?
Between 90° and 180°.
What is the length of the eraser?
Why might someone think that the length of the eraser is 7 inches? Why would they be incorrect?
The eraser ends at 7 inches, but since it does not start at zero inches, it does not cover 7 one-inch spaces on the ruler. Therefore, it does not measure 7 inches long.
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