中２数学 図形の性質と証明 逆・正三角形
Quiz
•
Mathematics
•
8th Grade
•
Medium
Kodai Tsuruoka
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
次のことがらの逆を答えなさい。
「△ABCでAB＝ACならば、∠B＝∠Cである。」
AB＝BC
ならば
∠B＝∠C
AC＝AB
ならば
∠C＝∠B
∠B＝∠C
ならば
AB＝AC
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
あることがらが正しいと、必ずその逆も正しくなる。
〇か×か
〇
×
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
あることがらの仮定に当てはまるもののうち、
結論が成り立たない場合の例のことを何というか。
凡例
反例
礼
不成立例
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
左の図の正三角形ABCで
辺ABの長さを求めなさい。（単位不要）
６
１２
３
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
左の図の正三角形ABCで
∠DACの大きさを求めなさい。（単位不要）
１２０
６０
９０
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