Kevin's work for deriving the equation of a circle is shown below. In which step did he make an error in his work?
What is the length of the radius of the circle whose equation is ?
Answer all 7 questions in this part. Each correct answer will receive 2 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. Utilize the information provided for each question to determine your answer. Note that diagrams are not necessarily drawn to scale. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil.
Triangle is the image of triangle after a dilation with a scale factor of and centered at point . Is triangle congruent to triangle ? Explain your answer.
Determine and state the area of triangle , whose vertices have coordinates , and .
A support wire reaches from the top of a pole to a clamp on the ground. The pole is perpendicular to the level ground and the clamp is 10 feet from the base of the pole. The support wire makes a angle with the ground. Find the length of the support wire to the nearest foot.
In the diagram below, circle has a radius of 10 .
If , find the area of shaded sector , in terms of .
On the set of axes below, .
Describe a sequence of rigid motions that maps onto .
In right triangle , altitude is drawn to hypotenuse , and .
Determine and state, to the nearest tenth, the length of .
Given circle with radius , use a compass and straightedge to construct an equilateral triangle inscribed in circle . [Leave all construction marks.]
The equation of a circle is . What are the coordinates of the center and the length of the radius of the circle?
What is an equation of circle shown in the graph below?
A circle centered at the origin passes through .
What is the equation of the line tangent to the circle at ?
The equation of a circle is . What are the coordinates of the center and the length of the radius of the circle?
The equation of a circle is .
Determine and state the coordinates of the center and the length of the radius of the circle.
The equation of a circle is . What are the coordinates of the center and the length of the radius of the circle?
What are the coordinates of the center and length of the radius of the circle whose equation is ?