Geogebra_lesson_1
- Author:
- dlebair
Getting started...
1. Draw a triangle with vertices (-3, 4), (2,4), and (1,1). Use 
at the top.
2. Find the lengths of each side of the triangle by using the measurements on the left side.
BC =
AC =
AB =
Classify the triangle by its sides: _____________________
3. Measure the angles of the triangle, using 
. Click in the order so that the second side you click is a clockwise rotation from the first. All your angles should be acute. If not, please re-measure.
4. Find the incenter of the triangle by bisecting all three angles of the triangle.
. What are the coordinates of the incenter? ______________
5. Clear the page except for triangle ABC.
6. Draw three perpendicular bisectors for the triangle, and find the circumcenter.
What are the coordinates of the circumcenter? ______________
7. Translate the triangle 5 units right. What are the coordinates? ___________________
8. Rotate the triangle 45 ccw about the point (2,1). What are the new coordinates? _______________
9. Reflect A'B'C' over the y-axis. What are the coordinates?
10. Take a screen shot of your figures, and copy it to a word file. Upload the word file with your name in this format to Canvas:
Deborah_Lebair_lesson_1
at the top.
2. Find the lengths of each side of the triangle by using the measurements on the left side.
BC =
AC =
AB =
Classify the triangle by its sides: _____________________
3. Measure the angles of the triangle, using . Click in the order so that the second side you click is a clockwise rotation from the first. All your angles should be acute. If not, please re-measure.
4. Find the incenter of the triangle by bisecting all three angles of the triangle.. What are the coordinates of the incenter? ______________
5. Clear the page except for triangle ABC.
6. Draw three perpendicular bisectors for the triangle, and find the circumcenter.What are the coordinates of the circumcenter? ______________
7. Translate the triangle 5 units right. What are the coordinates? ___________________
8. Rotate the triangle 45 ccw about the point (2,1). What are the new coordinates? _______________
9. Reflect A'B'C' over the y-axis. What are the coordinates?
10. Take a screen shot of your figures, and copy it to a word file. Upload the word file with your name in this format to Canvas:
Deborah_Lebair_lesson_1