Question

the figure shows the represents the pattern of a glass ceiling based on the marketings shown. which triangles can be proven congruence?

Answer 1

Pay your attention to the triangles INK and KNP.

Notice that:

`IK\equiv PN`
`\angle IKN\equiv\angle KNP`
`KN\equiv NK`

For the SAS criterion, then:

`\Delta IKN\cong\Delta PNK`

It is apparent but not known if there are collinear points in the figure. So, this is the only congruence that we can be 100% sure about.