Hector drew a 120°what fraction pf a circle does hectors angle turn through?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

Write the equations in logarithmic form 7^3=343

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?