Question

I am not sure how to do this and I don’t have much time before my test solve problem a

Answer 1

Given:

a)

Consider the triangles ABC and ADC.

AB=DC

`\angle\text{ABC}=\angle\text{ADC}`

The common side is AC.

Using the two-column method.

`1.AB=DCand\angle ABC=\angle ADC\ldots\ldots\ldots.1.\text{given}`
`2.AC\cong AC\ldots\ldots.2.\text{Reflexive property }`
`3.\Delta\text{ABC}\cong\Delta ADC\ldots\ldots.3.\text{SAS potulates}`

b)

Consider the triangle.

Using triangle sum property, we get

`\angle EDF+70^o+60^o=180^o`
`\angle E\text{DF}=50^o`
`2.\angle EDE\cong\angle JLK\ldots\ldots..2.triangel\text{ sum property.}`