cho Δ MNP có góc M bằng 90 độ ,kẻ MI ⊥ NP (I ∈ NP). vẽ MK là phân giác của góc IMP ( K ∈ IP). kẻ KA ⊥ MP( A ∈ MP) a. CM ΔMKA= ΔMKI b. gọi giao điểm AK và MI là B . CM MK ⊥ BP và IA song song BP c. so sánh hai đoạn thẳng KP và BP

Cho m,n là hai số nguyên khác 0 thỏa mãn 4/m-1/n=1.Chứng minh m chia hết n

160. It (rain)…………….when we arrived. 161. Bill said he (forget)……………………to buy a dictionary 162. He felt asleep while he (do)………………his homework. 163. At this time next week, we (live)………………..in USA. 164. John (watch)…………………….TV at 8 last evening. 165. By the end of last March, I (study)……………………….English for 5 years. 166. By next month. I (finish)………………my first novel. 167. By this time next week, he (write)………………..his novel for 6 months. 168. By the time you arrive, I (finish)……………….writing an essay. 169. He might get fat if he (stop)…………………..smoking. 170. If I had seen the movie, I (tell)………………………you about it last night.

140. You may begin when you (be)……………….ready. 141. I see that Henry (write)………………… his composition now. 142. I had done what (be)…………………necessary. 143. They had found that the road (be)…………………………very long. 144. I saw that I (make)……………………..a mistake. 145. We find that we (take)…………………….a wrong way. 146. I want to know how long she (live)………………..here. 147. I didn’t know who (help)……………him. 148. Do you hear what she (just, say)…………………….? 149. They believe that the police (capture)………………the thief soon. 150. Did John say he (call)……………….you again? 151. She has thought that the work (be)………………….easy. 152. She said that she (get)………………married soon. 153. He thinks that it (rain)………………….tonight. 154. The students had thought that the English test (be)……………….rather difficult. 155. I wonder what changes the new president (introduce)…………………… 156. Please be quiet! I (work)………………… 157. When I (be) ………………..a child, I (want)……………..to be a doctor 158. Up to now, the teacher (give)……………………. our class 5 tests 159. I (not send)……………..the parcel until I hear from you.

Cho tam giác ABC, M là trung điểm BC. N thuộc cạnh AC sao cho AN=1/3AC. BN giao AM tại I. a, CMR I là trung điểm AM. B, Tính BI/IN Dùng Menelaus và Ceva nha nhé mọi người! GIÚP EM VỚI!!!

1. this / others / best / to / problem / are / the / there / is / solution / although / the / , 2. colors / me / beautiful / are / my / pencils / different / bought / whose / mother / some Giúp mình sắp xếp 2 câu này với ạ.

121. I am going to write John as soon as I (have)……….spare moment. 122. The thief was arrested as he (leave)………. the bank. 123. We (send)……… the money as soon as the goods are delivered. 124. Before we (go)……very far we found that we (lose)……………. our way. 125. By the end of this year I (be)…………..here for fifteen years. 126. After I (hear)………. the news yesterday evening I (hurry)………… to see him. 127. I (not give)……………another cake till you (finish)……….your milk. 128. I’m busy at the moment. I (decorate)…………….the living room. 129. I see that Tom (write)……………..his composition. 130. He says that he (look)………….for a job next week. 131. They think he (be)……………here last night. 132. He tells us that he (be)……………..to the mountains before. 133. I hoped that he (be)………….. able to attend. 134. He wants to do it before his father (come)……………………… 135. The student who answered the question (be)……………..John. 136. This is the house that Jack (build)………………..three years ago. 137. Mary (have)…………….. dinner when her friend called. 138. John (live)……………… in the same house since he left school. 139. Shut all the windows before you (go)………………….out.

101. Don’t worry. We (finish)……… ……..the report by 11. 102. Listen to this ! I think this news ( surprise)…………you. 103. When I first (come)…….to this village, it was quiet place. But since then the population (double)………and a lot of leisure facilities (build)………. 104. Hurry up or you (be)……. ……….late for class. 105. The Ajax shoe company (employ)……. 25 new men next month. 106. Don’t talk to me . I (try)………… to learn this page by heart. 107. A:Call a doctor quickly! The old man (die)……….. B: The doctor is on the way. He (just leave) ……….. his house. 108. Don’t be upset. I ( understand)………….perfectly. 109. We must take umbrella. It (rain)………………. 110. Wood usually (float)…………. on the water. 111. Look out! The ceiling (fall)………………in. 112. It’s too late. Nothing (matter)………….. now. 113. I (listen) ……… to the radio when you (ring)…………..the bell first time , and that’s why I (not hear)………….you. 114. At school, We (learn)……..two foreign languages. 115. As a boy , I (always read)………….I always (have)………..my nose in a book. 116. John (learn)……….English for seven years, and at last he (master)………the irregular verbs. 117. It (rain)……… but it (stop)………….. now. 118. When I (open)……..the door this morning I (see)…… a man on his knees. 119. When I (ask)………him what he (do)………, he (say)……. that he (drop)………a 50p piece outside the door and (look)…………for it. 120. By the time I (recover)………. from the shock he (disappear)………round the corner.

Cho đường tròn ( O ) đường kính AB . Trên tia đối của tia AB lấy điểm S , qua S vẽ một đường thẳng cắt đường tròn ( O ) tại hai điểm D , E ( D nằm giữa S và E ) , Hai tia AD và BE cắt nhau tại P. Hai dây DB và AE cắt nhau tại H. a / Chứng minh tứ giác PDHE nội tiếp . So sánh PDE và EBA B) Vẽ dây EF vuông góc AB. DF cắt AB tại K. Chứng minh tứ giác ADHK nội tiếp . Từ đó suy ra P , H , K thẳng hàng . c / Khi đường thẳng SDE quay quanh S thì trung điểm của đoạn DE chạy trên đường nào ? Giới hạn ?

Giúp em với mnaj Tksss trước ☺️