13. In the adjoining figure:
42 is 125° and 45 is 55°. Is V/m? Give reasons in support of your
answers and also find all other angles.
125º =
2/1
3 P4
= 55°
6 5
7 8
Answers
Answer:
Step-by-step explanation:
Define the following terms:
(i) Angle
(ii) Interior of an angle
(iii) Obtuse angle
(iv) Reflex angle
(v) Complementary angles
(vi) Supplementary angles
ANSWER:
(i) Two rays OA and OB, with a common end-point O, form an angle AOB that is represented as ∠AOB.
(ii) The interior of an angle is the set of all points in its plane, which lie on the same side of OA as B and also on the same side of OB as A.
(iii) An angle greater than 90° but less than 180° is called an obtuse angle.
(iv) An angle greater than 180° but less than 360° is called a reflex angle.
(v) Two angles are said to be complementary if the sum of their measures is 90°.
(vi) Two angles are said to be supplementary if the sum of their measures is 180°.