CONSTRUCTIONS+pages+8-11

__**PHYSICAL CONSTRUCTION #1**__ :
Watch this video. Stop at 1:20. media type="youtube" key="6OtKnISvGyE" width="560" height="315"

(unedited: [] from 2:45 to 4:01) Draw the flower!

__**PHYSICAL CONSTRUCTION #2**__ :
Watch this video, and draw a perpendicular bisector of segment AB A **__perpendicular bisector__** makes a right angle //and// passes through the midpoint media type="custom" key="28571959"

__**PHYSICAL CONSTRUCTION #3**__ :
Watch this video, and draw the bisector of the angle An __**angle bisector**__ is a ray that cuts an angle in half media type="custom" key="28571961"

__**PHYSICAL CONSTRUCTION #4**__ :
Watch this video, and draw an equilateral triangle. An __**equilateral** triangle__ is a triangle with all three sides the same length. media type="custom" key="28571955"

=____= =. __GEOGEBRA CONSTRUCTIONS__=

Introduction:
 * Download GEOGEBRA: Go to geogebra.org
 * "START GEOGEBRA"
 * "GEOMETRY"
 * It should look like this:




 * go to []
 * Scroll down and watch the two videos "How to construct a polygon" "How NOT to construct a polygon"

__**GEOGEBRA CONSTRUCTION #1**__ :
Create Perpendicular lines:



Call your teacher over to check it before going on to the next construction

__**GEOGEBRA CONSTRUCTION #2**__ :
Create Parallel lines: The same as construction #1, but create "parallel lines" instead.

Call your teacher over to check it before going on to the next construction

__**GEOGEBRA CONSTRUCTION #3**__ :
Create a Perpendicular Bisector: not done yet

Change the original line into a segment: step 7: Right click on the line, and uncheck "show object". Step 8: Use the same 2 points to create a segment instead.

Call your teacher over to check it before going on to the next construction

__**GEOGEBRA CONSTRUCTION #4**__ :
Create an Angle Bisector: Call your teacher over to check it before going on to the next construction

__**GEOGEBRA CONSTRUCTION #5**__ :
Rectangle: Watch this video (no sound) and mimic it to create a rectangle. media type="custom" key="28571967" not done yet After you have made your rectangle, you will notice that you have all these extra parts on the screen. Hide them by right clicking, and uncheck "show object" Do this until you have **ONLY** a rectangle, and no extra lines.

Call your teacher over to check it before going on to the next construction =____= =**__SPREADSHEETS__**=

__**SPREADSHEET #1**__ :
Open your Google drive, and select NEW --> Google Sheets

We know that the angles of a triangle add up to 180. You are going to write a simple spreadsheet program that if you type in 2 of the angles, it will calculate the third for you.


 * Click on box B2
 * Type (in B2): //T he first angle is //
 * Click on box D2
 * Type (in D2): //T he second angle is //
 * Click on box F2
 * Type (in F2): //T he third angle is //
 * These are descriptions, we are going to put the actual measurements in the boxes below.
 * In box B3 type the number 40
 * In box D3, type the number 60
 * If those are two of the angles in a triangle, we know that we can subtract them from 180 to find the third angle. BUT WE ARE GOING TO HAVE THE COMPUTER DO THAT FOR US, and it will write the answer in F3
 * Click on box F3
 * Type "=180-B3-D3"
 * (don't include the quotes)
 * Hit enter
 * Box F3 should automatically change to 80!
 * Type any angle measures in B3 and D3, and F3 should automatically calculate what 180 minus those numbers should be

=click here for Tougher Constructions=