Geometry

Question 1

After a dilation centered at the origin, the image of CD is C’D’. If the coordinates of the endpoints of these segments are C(6, -4), D(2, -8), C’(9, -6), and D’(3, -12), the scale factor of the dilation is…

Answer 1

You would set the coordinates into slope formulas.
9/6 = -6/-4 = 3/2 = -12/8
The answer would then be 3/2

Question 2

In Triangle ABC, Angle ACB is a right angle, E is a point on AC, and ED is drawn perpendicular to hypotenuse AB.
If AB = 9, BC = 6, and DE =4, what is the length of AE?

Answer 2

Similar Triangles.
4/x = 6/9
x=6

Question 3

Finding the Area of a sector in a circle.

Answer 3

angle/360 = x/pi*r^2

Question 4

Finding the length of an Arc.

Answer 4

angle/360 = x/pi *2r