4. Part A: Draw any shape that has a right angle but does not have four sides. For example, you could draw a cross.
B. The shapes are quadrilaterals with four right angles, more specifically they're both rectangles.
5. The first one is a line, the second one is a line segment, the third one is a ray, and the fourth one is a point.
6. The triangle appears to have equilateral sides and acute angles.
