Question

Prove that the opposite angles of a parallelogram are congruent.

Answer 1

@jim_thompson5910

Answer 2

The basic idea is to show that triangle BDA is congruent to CDB

This will prove that angle A = angle C by the CPCTC property

Note: CPCTC = corresponding parts of congruent triangles are congruent

Answer 3

Similarly, you have to show that triangle ADC = triangle ABC

This will allow you to say angle ABC = angle ADC by the CPCTC property again

Answer 4

So Thats My Answer Abc= Angle ADC By the cpctc ?

Answer 5

yes that sounds right

Answer 6

iight preciate it

Answer 7

np