Match the reasons with the statements given. Given:

Triangle ABR

Prove:

<1 = <2

(< means angle)

Pls help me

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.