3, 4, 5

Question 1

A long-distance race that has three parts: swimming, bicycling, and running

Answer 1

triathlon

Question 2

A series of three novels, movies, etc., that are closely related and involve the same characters or themes

Answer 2

trilogy

Question 3

a period of three months; one of three periods into which a school year is sometimes divided

Answer 3

trimester

Question 4

A fishing spear that has three points and that looks like a large fork

Answer 4

trident

Question 5

A flat shape that has four sides and four angles

Answer 5

quadrangle

Question 6

A group of four singers or musicians who perform together

Answer 6

quartet

Question 7

A US customary unit of measurement for liquids; 4 quarts equals a gallon

Answer 7

quart

Question 8

A flat shape that has five sides and five corners

Answer 8

pentagon

Question 9

A shape that is like a star with five points formed by five straight lines

Answer 9

pentagram

Question 10

One of five babies that are born at the same time to the same mother

Answer 10

quintuplet