Project 8.4. Indirect Measurement (Mirrors)
The angle of incidence of an object reflecting off a mirror is equal to the angle of reflection, so mirrors also make great contexts for using similar triangles!
You can find the height of a very tall object by placing mirror on the ground so that when you stand back and look into the mirror you see the top edge of the object reflected in the mirror.
When you do this, you have made 2 similar triangles!
You'll need 3 measurements to get the height of the building:
If the woman is 5.5 feet tall, she is 7 feet from the mirror and the building is 54 feet from the mirror, how tall is the building?
Enter the height in feet (thousandths place) of one of your group members here.
Enter the distance in feet (thousandths place) from the person above to the line on the mirror.
Enter the distance in feet from the base of the building to the line on the mirror.
Write your proportion (use colon format, please) to find the height of the building, h.