Question

lines and qngles chapter explanation

Answer 1

HELLO MY DEAR FRIEND


ANGLE - A ANGLE IS MADE UP OF TWO RAYS STARTING FROM COMMON END POINTS THE COMMON AND END POINTS IS CALLED A VERTEX. AND UP TO RAYS ARE CALLED ARMS OF THE ANGLE.

TYPES OF ANGLES THEY ARE
 
ACUTE ANGLE - THE ANGLE BELOW 90 DEGREES IS KNOWN AS                                           ACUTE ANGLE. EXAMPLE - 30 DEGREES.

OBTUSE ANGLE - THE ANGLE ABOVE 90 DEGREES AND LESS THAN                                    180 DEGREES  IS KNOWN AS  OBTUSE ANGLE.                                         EXAMPLE - 100 DEGREES.

RIGHT ANGLE - THE 90 DEGREE IS CALLED RIGHT ANGLE.

STRAIGHT ANGLE - 180 DEGREES IS CALLED STRAIGHT ANGLE.

COMPLEX ANGLE- THE 360 DEGREES ANGLE IS CALLED COMPLEX 
                                  ANGLE.

LINE - LINE HAS TWO 2 END POINTS. A LINE OBTEND WHEN A LINE
           EXTENTS ON BOTH SIDES INDEFINEATLY. 

I HOPE THIS WILL HELP'S U...........*-*