Consider the diagram.

Triangles L O N and L M N share side L N. Sides O L and M L are congruent. Sides O N and N M are congruent.

The congruence theorem that can be used to prove △LON ≅ △LMN is

SSS.
ASA.
SAS.
HL.

step-by-step explanation: where's the phrase?

there would only be 50 odd numbers between 1 and 100 so therefor there would be 50 even so that would only be 50 odd numbers.

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."