UNIT 5 SIMILARITY, RIGHT TRIANGLE TRIGONOMETRY, AND PROOF
Lesson 5: Proving Theorems About Lines and Angles
In the diagram that follows, AC and BD intersect. Use this information to see for the measures
the unknown angles in problems 5 and 6. Show and justify your work.
N
5. Find m24 if mZ2=3x +74 and
23=2x+11.
6. Find m23 if mZ1=112-9 and
23=7r+23.

Create a graph for the demand for starfish using the following data table: quantity/price of starfish quantity (x axis) of starfish in dozens price (y axis) of starfish per dozen 0 8 2 6 3 5 5 2 7 1 9 0 is the relationship between the price of starfish and the quantity demanded inverse or direct? why? how many dozens of starfish are demanded at a price of five? calculate the slope of the line between the prices of 6 (quantity of 2) and 1 (quantity of 7) per dozen. describe the line when there is a direct relationship between price and quantity.