concatenate is the operation of joining two character strings end to end. For example, the strings "snow" and "ball" may be concatenated to give "snowball".
an anagram
a spoonerism
Ton plus two letters = something 😁
It's called an Anagram.
When you add up the answer you get in the end is called the 'sum'.
Supplementary angles add up to 180, complementary on the other hand add up to 90.
It is called 'Add it Up
Complementary angles. Angles that add up to 180 are called supplementary angles. :)
There is one called I think missing letters but it is a puzzle you have to pick the right letter that will complete the two words. It gets harder as you get more right. Add me! I'm purplesquirtle
The obvious one is "L" as you start with A then add 3 letters = D, then add 1 letter = E, then add 3 letters = H, then add 1 letter = I, then add 3 letters = L.
anagram
It is called a perfect number.