Question

usay YA
Now we meast
Reflex LYZ
Jing a Reflex
An angle whose
another angle is the greater angle of the two
Also, if two angles have equal measure they are said to
be congruent.
Thus, if LABC - DEF = 75°, then LABC is congruent to
DEF and we write ZABC = DEF (= is the symbol of
congruency).
wish to
Drawing Angles
We
draw a lin
We can also draw an angle using a protractor. Suppose we wish to draw an angle of 70. ABA = 60
draw a ray OA (say left to right)
240° - 180º =
Now, we place the centre of the protractor at O and align the
base line along OA
oflex ZABC =
Now, we put a dot at 70° mark along the inner circle. Let us
mark this dot as B.
Draw a ray OB from O and through B.
Thus, we get ZAOB = 70°.
Types of Angles
We have learnt to measure angles with a protractor.
For ABC
We shall now classify angles according to their measures.
Ceasare o
Quick
Acute
Right
Obtuse
Straight
Reflex
a G
Let Us
An angle whose measure is between 0° and 90° is called an acute angle.
An angle whose measure is 90° is called a right angle.
An angle whose measure is between 90° and 180° is called an obtuse angle.
An angle whose measure is 180° is called a straight angle.
An angle whose measure is more than 180° but less than 360° is called a reflexol
Draw an 4
F in the ext
Classify the
complete
1330
Measure E​

Answer 1

Answer:

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