S.3
예각·직각·둔각·평각
4분기 (4~6월)각을 예각·직각·둔각·평각으로 분류하기 (어려움 단계는 180°보다 큰 각 포함)
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문제 수
Acute, Right, Obtuse & Straight Angles
Skill S.3 · Lines & angles · ★★☆ Medium · Quarter 4
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Score/ 6
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Write acute (less than 90°), right (90°), obtuse (between 90° and 180°), or straight (180°).
Example
This angle isobtuse
Think: It opens wider than the corner of a square () but is not a straight line, so it is obtuse.
- 1This angle is
- 2This angle is
- 3This angle is
- 4This angle is
- 5This angle is
- 6This angle is
Answer Key
S.3 Acute, Right, Obtuse & Straight Angles · ★★☆ Medium
- 1straight
- 2acute
- 3acute
- 4acute
- 5straight
- 6obtuse