7
QuizMultiple Choice
Finding Distance in the Coordinate Plane
Question 7 of 10 • TX-Geometry CR
Angelica calculated the distance between the two points shown on the graph below.Step 1: Use the point C(–4, –5) to make a right triangle with the 90 degree vertex at C.Step 2: Determine the lengths of the legs: AC = 6 and BC = 10.Step 3: Substitute the values into the Pythagorean theorem: .Step 4: Evaluate She states the length of AB is 8 units. Which best describes the accuracy of Angelica’s solution?
Answer
A
Angelica is correct.B
Angelica made an error determining the location of the right angle. The right angle should be at (2, 5).C
Angelica made an error counting the lengths of the legs of the right triangle. The lengths should be 7 and 11.D
Angelica made an error substituting the values into the Pythagorean theorem. The equation should be .