If ΔABC is dilated from point A by a scale factor of one half which of the following equations is true about segment D prime E prime? Triangle ABC is shown with point D lying on side BC and point E lying on side AC. Line DE is perpendicular to side AC. segment D prime E prime = one half segment DE segment D prime E prime = two segment DE segment D prime E prime = segment DE segment D prime E prime = three segment DE

  segment D prime E prime = one half segment DE

Step-by-step explanation:

Dilation by a factor of 1/2 makes every image segment be half the length of the corresponding pre-image segment.

  D'E' = (1/2)DE

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

80 the answer is 80

step-by-step explanation: