a) Find the complement of angle 720 b) AB and CD are two lines intersecting at a point O - Maths - Lines and Angles

Question

a) Find the complement of angle 720 b) AB and CD are two lines
intersecting at a point O Find the value of p 3p+15 105? In the
given fig ABIDE and BCIEF If LABC80?, then find a) 4DGC and b )
ZDEF Give Reasons

Neha Sethi · Accepted Answer

Dear
student
a)
The sum of the measures of complementary angles is 90º
72°
Complement = 90° − 72°
= 18°
b) AB and CD are two lines
intersecting at a point O
⇒∠AOC=∠BOD  vertically opposite angles⇒105°=3p+15⇒3p=105°-15°⇒3p=90°⇒p=30°
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