Answer:
Triangle Circle Semi-Circle Square Rectangle Parallelogram Rhombus Trapezium Kite Polygons (Pentagon, Hexagon, Octagon, Nonagon, Decagon, etc.)
Answer:
Franz Joseph Hadyn
Explanation:
I do not know the explanation, but I really hope this helps!! :)
I'm guessing you mean in Photoshop so you would
1. click the ruler tool
2. drag it along the line you know is straight
3. on the options bar, click straighten
hope this helps :)