# Straight lines

Draw two lines c, d so that c || d. On line c mark points A, B, from point A start perpendicular to line c, from point B perpendicular to line c.

**Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):**

**Showing 1 comment:**

#### To solve this example are needed these knowledge from mathematics:

## Next similar examples:

- Neighbor angle

For 136° angle calculate size of adjacent angle on one side of a straight line. - Draw it!

Draw two lines c, d that c || d. On line c mark the points A, B. By point A lead perpendicular line to c. By point B lead perpendicular line to c. - Three points

Mark three points E, F and G in the plane not lie on one line. a) Draw a line segment FG b) Construct halfline (ray) EG c) Draw a line EF - Square

Draw a square on the edge of a = 4 cm. Mark the center of symmetry S and all axes of symmetry. How many axes of symmetry does? Write down. - Rectangle

Draw a rectangle with the sides a = 4 cm, b = 5 cm. Mark the center of symmetry S and all axes of symmetry. How many axes of symmetry has? Write down. - The sum graphically

Draw a graphically sum of the all sides of 4-gon ABCD. - Angle

Draw angle |∠ ABC| = 130° and built its axis. What angle is between axis angle and arm of angle? - Line

How many parts of line divide 5 (different) points that lie on it? - Tangents construct

Circle is given k (S; 2.5 cm) and an outer line p. Construct a tangent t of the circle that has with a line p angle 60°. How many solutions has the task? - Plane

On how many parts divide plane 6 parallels? - Slope

Find the slope of the line: x=t and y=1+t. - Angles

Which of those angles are obtuse? - Obtuse angle

Which obtuse angle is creating clocks at 17:00? - Compare

Compare with characters >, <, =: 85.57 ? 80.83 - Roman numerals +

Add up the number writtens in Roman numerals. Write the results as a decimal number. - Triangle

Prove whether you can construct a triangle ABC, if a=9 cm, b=10 cm, c=4 cm. - To thousands

Round to thousands following numbers: