A′b′c′ is a dilation of triangle abc . what is the scale factor? enter your answer in the box. $\text{basic}$ $x$$y$$x^2$$\sqrt{ }$$\frac{x}{ }$ $x\frac{ }{ }$ $x^{ }$$x_{ }$$\degree$$\left(\right)$$\abs{ }$$\pi$$\infty$ note: images may not be drawn to scale. triangle abc is shown. side ab is labeled 9. side bc is labeled 9. side ca is labeled 18. triangle a prime b prime c prime is shown. side a prime b prime is labeled 4 and a half. side b prime c prime is labeled 4 and a half. side c prime a prime is labeled 9.

  1/2

Step-by-step explanation:

  The ratio of corresponding sides gives the scale factor:

  C'A'/CA = 9/18 = 1/2

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Both triangles will look like line segments, as the sum of the shorter legs is exactly equal to the longer leg. The height is zero.

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh

answer: it is a.,b.,d.

step-by-step explanation: