You can draw a straight line in a clock when the hour hand, and the minute hand, are facing the opposite direction to each other. For an example 6:00,2:45,etc
Easy.
Draw a straight line that bisects the circle and passes through the center.
Construct a circle with a compass and then draw a straight line through its centre
draw a straight line then draw a circle on that line at the top then draw a swirl in the circle
To make perpendicular lines, draw a horizontal line. Then using a compass or tracing around the edge of a curved object, draw one circle ( or just a semi-circle) so that it crosses the horizontal straight line in at least one point. Now rotate the compass or move the curved object to draw another circle (or semi-circle). This second circle (or semi-circle) must cross through the horizontal straight line as the first one did. It also must cross through the first circle (or semi-circle) at two points- above the horizontal straight line and below the horizontal straight line. Next, draw a straight line from where the two circles (or semi-circles) meet above the horizontal straight line through to where they meet below the horizontal straight line. You now have a line perpendicular to the first line.
you can use a ruler or a book or anything that has a straight line
You should draw a line as straight as a rainbow with cheese.
A right angle triangle is formed if you draw a line through it straight down from the pointed tip to the base.
Draw one square, and draw one circle. Find the center in each, and draw one straight line vertically. Then find the middle once more but this time draw a line straight through horizontally. You have four equal parts in each shape.
Draw a straight line segment. From one of its ends, draw another straight line segment. From the end of this straight line, draw another straight line segment which does not touch any of the existing lines. Repeat the same 5 more times. From the end of this last line, draw a straight line to the start of the first line. You may need to tweak some of the intermediate lines so that the last line does not intersect an existing line. That is it! A plane area enclosed by 9 straight lines = a 9-sided polygon.
The hands of the clock will form a straight line 12 times.
It is impossible to draw a straight line.