Question

given: ABC d=ac BD=DC 1=2 BDC=100 find: A and B and C
i need asap pls

Answer 1

Step-by-step explanation:

) We have OA = OC and OB = OD and∠AOB =∠COD which are vertically opposite angles.

Therefore by SAS condition, △AOC ≅ △BOD.

2) We have BD = DC

∠ADB =∠ADC = 90°

and AD = AD

Therefore by SAS condition, △ADB ≅ △ADC.

3) We have AB = DC

∠ABD = ∠CDB and BD = DB

Therefore by SAS condition, △ABD ≅ △CBD.

4) We have BC = QR

∠ABC =∠PQR = 90°

and AB = PQ

Therefore by SAS condition, △ABC ≅ △PQR