The similarities between the Teller Amendment of 1898 and the Platt Amendment of 1901 is that both are concerned with the rights of Cuba.
The Teller amendment was an amendment to a joint resolution by the Congress of the United States of America, issued on April 20, 1898, in response to President William McKinley's war message. The amendment posed a condition on the presence of US military forces in Cuba, meaning that the United States could not annex Cuba, but only leave "control of the island to its people". In essence, the United States could help Cuba gain independence, but then they would have to withdraw all the troops from the country. The amendment took its name from the senator and former Secretary of the Interior Henry Teller.
The Platt Amendment was an amendment to a joint resolution by the Congress of the United States of America aimed at establishing the conditions for the withdrawal of US troops left in Cuba at the end of the Spanish-American War. It also defined the relations between Cuba and the United States for over thirty years, until the Treaty of Relations of 1934.