Which statements are true. select each correct answer. 1. all triangles have 3 right angles

2. all triangles are closed figures

3. only some triangles are plane figures

4. all triangles are plane figures

5. all triangles are polygon.

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?

What’s the answer? and how do i solve it ?