Define a right angle:
A right angle is an angle of 90°.
Define a straight angle:
A straight angle is an angle of 180°. It forms a straight line and is the double of a right angle.
Define an acute angle:
An acute angle is an angle of under 180°.
Define an obtuse angle.
An obtuse angle is an angle of above 180°.
What does an angle of 360° make?
A full circle. It is the double of a straight angle and the quadruple of a right angle.
Define a square:
A square is a geometrical figure with four sides of equal length and four angles of equal measure.
Define a side in a geometrical figure:
A side is (basically) one of the lines in the figure.
How many right angles does a square have?
Define a rectangle:
A rectangle is a geometrical figure with two pairs of sides and angles of equal length and measure.
How many right angles are there in a rectangle?
Define a circle:
A circle is the collection of points that are at the same distance from another single point, called the origin(O).
How many angles of 360° are there in a circle?