Select true or false for each statement.

1. a circle is a convex polygon. true or false

2. a rhombus can have only one right angle. true or false

3. all squares are rectangles. true or false

4. a regular octagon can be concave. true or false

5. a triangle can have at most one right angle. true or false

6. a regular triangle has 3 60 degrees angles. true or false

!

1. True
2.False  A rhombus is quadrilateral with all side of equal length. Thus a quadrilateral with all sides of equal length and all angles right angles is still a rhombus but it is also a square. It is also a quadrilateral, a rectangle and a parallelogram. A square is a special kind of rhombus, but it is still a rhombus.
3. True
4.True
5. True
6. False

I hope I did well, because I tried my best but Hope thish elps!

step-by-step explanation:

yes it is1. move over 2 points on the x-axis2. move over 2 points on the y-axis