TRIDEVAS are the three lords of devtaas .

They are Brahma , Vishnu and Mahesh.

Brahma is the Creator, Vishnu the Protector, and Mahesh the Distructor.

Study the image this is the image of trideva  notice the Trishul, the Chandra and the Ganga (of lord Shiva) the Kamandal (of lord brahma) , Shankh, Chakra ,Padam and Gaddha (of lord Vishnu) and also notice the Kaam Dhenu ( the Holy cow ), and the four Dogs symbolizes Four Vedas