Question

Find the area of triangle whose vertices area(123) b(231)c(321)

Answer 1

Answer:

Abstract Noun: They are nouns used to define anything that cannot be seen, touched, or sensed by any of our senses. An idea, a state of being, a feeling, a quality, or a characteristic quality can be termed as abstract nouns.

For example, you can be sad, and feel the emotion, but not touch it, smell it, taste, or even see it, but you do know it exists within you.

Collective Noun: Nouns that are considered to be a group of nouns or a set of things or people. They are a group of common nouns and can be counted. 

For example, a banana is a common noun, the collective noun for it

will be a bunch of bananas/hand of bananas.