Question

Please give the proof of this given expression: <1 ≅ <4

Answer 1

< = angle

Answer 2

oh

Answer 3

angle 1 is equal to angle 4

Answer 4

how do I prove that is correct?

Answer 5

In triangles?

Answer 6

no just in general

Answer 7

Ok, they will be equal if they are on opposite sides of an intersection of two lines, or if they are both on the same side of a line through parallel lines.
In general, if you can calculate them, you will know if they are the same.
If shapes are similar, then they will have the same angles... is that enough?