
Геометрия треугольники
Authored by Ekaterina Blatova
Mathematics
7th Grade
Used 1+ times

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7 questions
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1.
MULTIPLE SELECT QUESTION
10 mins • 5 pts
В треугольнике АВС проведены медиана AM, биссектриса BN и высота СК. Укажи номера всех верных утверждений
ВМ = СМ
AN = CN
∠BAM = ∠CAM
∠ABN = ∠CBN
∠AKC = 90°
2.
FILL IN THE BLANK QUESTION
1 min • 5 pts
МК – хорда окружности с центром О. Найдите ∠OMK, если ∠MOK = 40°
3.
OPEN ENDED QUESTION
3 mins • 5 pts
Луч SC является биссектрисой угла AS В, а отрезки SA и SB равны. Докажите, что Δ SAC = Δ SBC.
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4.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Точка D лежит внутри треугольника PRS. Найдите ∠RDS, если RS = PS, DP = DR, ∠RDP = 100°.
5.
FILL IN THE BLANK QUESTION
1 min • 5 pts
В окружности с центром О проведены диаметр АС и хорда BD, пересекающиеся в точке М, причем ВМ = DM. ∠BAC = 35°. Найдите ∠BAD.
6.
FILL IN THE BLANK QUESTION
1 min • 5 pts
В окружности с центром О проведены диаметры МК и PH, причем ∠ОРК = 40°. Найдите ∠OMH.
7.
OPEN ENDED QUESTION
3 mins • 5 pts
Луч AD – биссектриса угла А. На сторонах угла А отмечены точки В и С так, что ∠ADB = ∠ADC. Докажите, что АВ = АС.
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