Which pair of triangles must be similar? (hint: try drawing the triangles in the space below) a. Triangles 1 and 2 each have a 35 angle. b. Triangles 3 and 4 are both isosceles. They each have a 40 angle. C. Triangle 5 has a 30" angle and a 90 angle, Triangle 6 has a 30 angle and a 70" angle. D. Triangle 7 has 50" angle and a 25" angle Triangle 8 has a 50 angle and a 105 angle.

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

Consider the following geometry problems in 3-space enter t or f depending on whether the statement is true or false. (you must enter t or f -- true and false will not work.) f equation editorequation editor 1. a plane and a line either intersect or are parallel t equation editorequation editor 2. two planes parallel to a third plane are parallel f equation editorequation editor 3. two lines either intersect or are parallel f equation editorequation editor 4. two planes orthogonal to a third plane are parallel f equation editorequation editor 5. two planes orthogonal to a line are parallel f equation editorequation editor 6. two planes either intersect or are parallel f equation editorequation editor 7. two lines orthogonal to a third line are parallel t equation editorequation editor 8. two lines parallel to a third line are parallel t equation editorequation editor 9. two planes parallel to a line are parallel f equation editorequation editor 10. two lines parallel to a plane are parallel f equation editorequation editor 11. two lines orthogonal to a plane are parallel

Write the equation in general quadratic form: plz !