Which rigid transformation would map abc to edc? a) a rotation about point b b) a reflection across the line containing cb c) a reflection across the line containing ac d) a rotation about point c

Option: D is the correct answer.

D) a rotation about point C.

Step-by-step explanation:

In order to map the figure ABC which act as a pre-image to the image EDC the transformation that will take place is:

                    A rotation about point C.

Since, when we fix the point C and the figure is rotated about the point C then the side AB is rotated to form side ED and side BC is mapped to side DC.

Hence, we can easily obtain our transformed image.

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc