Cho tam giác ABC cân tại A. Vẽ đường tròn tâm O bán kính R tiếp xúc với AB,AC tại B,C.Đường thẳng qua điểm m trên BC vuông góc OM cắt tia AB,AC tại D,E
a) CM: 4 điểm O,B,D,M cùng thuộc 1 đường tròn
b) CM: MD=ME
I.Fll in the each number space with One appropriate word:
the organized team well good a
Volleyball is a (1)............. sport in which two teams of six players are separated by a net. Each team tries to score points by grounding a ball on the other team’s court under(2).............rules. It has been a part of the official program of the Summer Olympic Games since 1964.
Today,(3)..........number of consistent techniques have evolved in volleyball, including spiking and blocking ( because these plays are made above the top of the net, the vertical jump is an athletic skill emphasized in the sport) as (4)............as passing, setting, and specialized player positions and offensive and defensive structures.