1. Two Dimensional Shapes 3 rd Grade South Carolina Standards addressed 3-4.2 Classify polygons as either triangles, quadrilaterals, pentagons, hexagons, or octagons according to the number of their sides. 3-4.3 Classify lines and line segments as either parallel, perpendicular or intersecting 3-4.4 Classify angles as either right, acute, or obtuse 3-4.6 Exemplify points, lines, line segments, rays, and angles. Amber Traverse

2. Do you know what each of these symbols represents? Amber Traverse Move to the next slide to learn the vocabulary that goes along with each of these symbols.

3. A Point is an exact position or location. Amber Traverse For example, in this picture each student has an exact position. The boy in the orange shirt is third in the first row. What is the exact position of the girl with orange Hair and pig tails? http://school.discoveryeducation.com/clipart/clip/classhands.html

4. A Line Segment is straight is part of a line has two end points Amber Traverse For example, think about when we line up for recess. Each person is a point on the line. Student A and student B make a line segment. That part of the line begins at A and ends at B. A B C D E F G

5. A line is straight continues in both directions does not end Amber Traverse Take the motion of a ball. You push the ball, if there was no gravity that ball would continue on the path for an undetermined amount of time.

6. A ray is straight is part of a line has one end point continues on in one without ending Amber Traverse A Pretend that you are in space and throw a ball from point A. Because there is no gravity that ball will continue in the direction thrown.

7. Test your vocabulary knowledge Amber Traverse On your whiteboard/paper write the correct vocabulary word for each symbol. 1. 2. 3. 4.

8. Types of angles Angles are made from two rays that share the same end point (known as the vertex). Amber Traverse An acute angle measures less than 90 degrees A right angle measures exactly 90 degrees it makes a square where the two rays meet An obtuse angle measures greater than 80 degrees, but less than 180 degrees

9. Types of lines Amber Traverse Parallel lines are lines that never touch. An example of these lines would be the roads that we drive on. Perpendicular lines are lines that cross over each other. Where the two lines meet right angles are formed. For example, where two roads meet at a light and cross over each other. Intersecting lines are Lines that cross over each other. Where the two lines meet acute and Obtuse angles are formed.

10. Test your angle and line knowledge Answer each number by naming the angle or line represented on your paper/whiteboard. Amber Traverse 1. 2. 3. 4. 5. 6.

11. Polygons are Amber Traverse two dimensional figures that are closed contain straight sides (no curves) Contain the same number of angles as sides.

12. Quadrilaterals Amber Traverse Picture taken from: http://www.mathsisfun.com/quadrilaterals.html are four sided figures have exactly four angles Which of the following figures is not a quadrilateral?

13. Triangles Amber Traverse are three sided figures have exactly three angles can be named either by their angles, sides, or both Which of the following is not a triangle?

14. Amber Traverse Pentagons are five sided figures have exactly five angles pentagon Hexagons Are six sided figures Have exactly six angles hexagon Octagons are eight sided figures Have exactly eight angles octagon

15. Polygon Masterpiece Look at the below picture made up of polygons; say the color then the name of the polygon. Amber Traverse

16. Works Cited Page Amber Traverse Pierce, Rod. "Quadrilaterals - Square, Rectangle, Rhombus, Trapezoid, Parallelogram" Math Is Fun. Ed. Rod Pierce. 25 May 2011. 3 Jul 2011 http://www.mathsisfun.com/quadrilaterals.html http://www.mathsisfun.com/quadrilaterals.html ThinkCentral. Web. 02 July 2011..