In which of these ways Islam similar to both Christianity and Judaism

Christianity and Islam both consider Jesus to be the Jewish Messiah of the Hebrew scripture. Christians generally consider Jesus to be the Son of God, while Muslims consider the Trinity to be a division of God's Oneness and a grave sin (shirk). Muslims believe Jesus (Isa) to be a messenger of God, not the son of God.

Down below I have written what there believes are and they are similar because they believe in some type of god. Islam (Arabic: الإسلام, Al-Islam) is a religion that believes in one god. All of its teachings and beliefs are written out in the Qur'an (also spelled Quran or Koran). People who follow Islam are called Muslims. They believe that the Qur'an was spoken to Muhammad by the angel Gabriel, and that it is the word of Allah. Judaism focuses more on actions than on beliefs, and books about Judaism tend to do the same. Most books emphasize holidays, practices and observances. The best summary of Jewish beliefs I've seen is Milton Steinberg's Basic Judaism. This book presents and contrasts the traditional and modern perspectives, and shows that we have more in common than many of us realize. God created the world: Christians believe God created the world in six days, resting on the seventh. They believe man is His most prized creation. 3. Jesus, God's Son: Jesus Christ is God's Son and the only way to salvation and forgiveness of sins.