Question

sort the words according to the meanings of their shared roots.
pentameter obstruct pentacle cardiogram
instruction pentagon myocardium pentathlon
heart five build

Explanation:

• Cardiogram: The root "cardio" means heart. A cardiogram is a record of the heart's electrical activity.
• Myocardium: The root "cardium" (related to "cardio") refers to the heart. Myocardium is the muscular tissue of the heart.
• Pentameter: The root "penta" means five. A pentameter is a line of verse with five metrical feet.
• Pentacle: The root "penta" means five. A pentacle is a five - pointed star.
• Pentagon: The root "penta" means five. A pentagon is a five - sided polygon.
• Pentathlon: The root "penta" means five. A pentathlon is a competition with five events.
• Obstruct: The root "struct" means build. To obstruct means to build (or place) something in the way.
• Instruction: The root "struct" (related to "instruct") means build. Instruction is like building knowledge in someone.

Answer:

• Heart: cardiogram, myocardium
• Five: pentameter, pentacle, pentagon, pentathlon
• Build: obstruct, instruction