What measuring and drawing tools do you know? Tell me how to measure this angle using a protractor.

1. What measuring and drawing tools do you know? 2. Tell me how to measure this angle using a protractor. 3. What are the simplest geometric shapes you know? 4. What geometrical figures “live” in three-dimensional space, in two-dimensional space, in one-dimensional space? Which figure has no dimensions? 5. What angle is called right, acute, obtuse, unfolded? 6. What angles are called vertical? What property do they have? 7. What angles are called adjacent? What property do they have? 8. Give the definition of the angle bisector.

1. Ruler, compasses, vernier caliper.
2. Find a reference point, align the angle line with the reference line. Mark the number equal to the measured angle and draw a line that crosses the protractor markings.
3. Circle, rectangle, square.
4. Ball, cube;
square, rectangle;
dot.
The point has no measurements.
5. Right angle – angle 90 degrees, acute angle – angle less than 90 degrees, obtuse angle – angle more than 90 degrees, unfolded angle – angle more than 180 degrees.
6. A vertical angle is formed when two right angles intersect. The vertical angles are equal.
7. Adjacent corners – corners where one side is common and the other two form a vertical line.
8. The line that divides the angle in half.