9 Solid- is a three dimensional figure that encloses a part of space. Those are what we call 2 dimensional shapes.We have learned the names of these shapes and found their areasIn chapter 12, we are going to work with 3 dimensional shapes or solids.Solid- is a three dimensional figure that encloses a part of space.
10 Prism- is a solid formed by polygons Prism- is a solid formed by polygons. Prisms have two congruent bases that lie in parallel planes.This would be called a triangular prism.This would be called a heptagonal prism.
11 2. Pyramid: is a solid formed by polygons 2. Pyramid: is a solid formed by polygons. The base can be ANY POLYGON, and the other polygons are triangles.VertexedgeFace
12 3. Cylinder: is a solid with two congruent circular bases that lie in parallel planes.
22 Relay Stations!Find one partner to work with and share a loose leaf paper and writing utensil between the two of you.Around the room you will find 3-D shapes or objects that you must classify in order to move on!You will need to match the shape name with the number(s) found at each station.In order to move on to your homework, I need 8 groups with all the correct answers!!
23 Now it’s your turn to practice on your own! Compete the following problems in your text book:Green: Page (20-30all)Yellow: Page (12-22all)Red: Page633 (1-13all)
25 Practice this in your notes along with me! How to sketch a prismStep 1 draw 2 congruent rectanglesStep 2 connect corresponding vertices using line segmentsStep 3 change any “hidden lines” to dashed linesPractice this in your notes along with me!
26 How to sketch a pyramidStep 1 sketch a pentagon for the base and draw a dot directly above the pentagon
27 Step 2 connect the vertices of the pentagon to the dot. Final step is to change any “hidden” lines to dashed lines.