Iwant to know the answer for this question

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap