다각형의 내각

Daniel Math Academy · Grade 7 Math

Interior Angles of Polygons

Skill K.5 · Triangles & polygons · ★★☆ Medium

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Count the sides. Use (n − 2) × 180° for the sum of the interior angles.

1. 1
   Sum of the interior angles: 
2. 2
   Sum of the interior angles: 
3. 3
   Regular polygon. Each interior angle: 
4. 4
   Sum of the interior angles: 
5. 5
   Sum of the interior angles: 
6. 6
   Regular polygon. Each interior angle: 
7. 7
   Regular polygon. Each interior angle: 
8. 8
   Regular polygon. Each interior angle: 

Daniel Math Academy · Grade 7 Math

Answer Key

K.5 Interior Angles of Polygons · ★★☆ Medium

1. 1$360^{\circ }$
2. 2$1,080^{\circ }$
3. 3$120^{\circ }$
4. 4$720^{\circ }$
5. 5$360^{\circ }$
6. 6$108^{\circ }$
7. 7$135^{\circ }$
8. 8$90^{\circ }$