Given: \triangle AED \cong \triangle BEC△AED≅△BEC and \overline{AC} \cong \overline{BD}. AC
≅
BD
.

Prove: \triangle ABD \cong \triangle BAC△ABD≅△BAC.

Note: quadrilateral properties are not permitted in this proof.

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Step-by-step explanation:

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answer: 230 miles ( vote ! )

step-by-step explanation:

180.39 minus 17.99 equals 162.4

then divide 162.4 by .80 to get 230

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