Answer:
1.Yes
Explanation: A rectangle is a quadrilateral with four right angles
2.Yes
Explanation: Every equilateral triangle is also equiangular
3.Yes
Explanation: Examples of mammals include rats, cats, dogs, deer, monkeys, apes, bats, whales, dolphins, and humans.
4.Yes
Explanation: First ten whole numbers are :0,1,2,3,4,5,6,7,8,9.
5.No
Explanation: An integer is the number zero, a positive natural number or a negative integer with a minus sign.