Demonstrative Adjectives

Question 1

This

Answer 1

Masculine Singular
Ce
Ce chapeau
Cet architecte

Feminine Singular
Cette
Cette femme

Question 2

These

Answer 2

Masculine and Feminine Plural 
Ces
Ces chapeaux
Ces architectes
Ces femmes

Question 3

Rules

Answer 3

The masculine ce adds a t when a vowel or h sound follows.

Example: cet architecte

Demonstrative Adjectives can be used to make a distinction or clariy a choice between things by adding -ci to the first
Noun and -là to the second

Example: cette chaise-ci ou chaise-là