what are vertically opposite angles??
When two lines intersect, four angles are formed at the point of intersection..
(∠a and ∠c) and (∠b and ∠d) are called vertically opposite angles.
H i !!!!!!!!!!!!!!!
Example: Find angles a°, b° and c° below:
Because b° is vertically opposite 40°, it must also be 40°
A full circle is 360°, so that leaves 360° - 2×40° = 280°
Angles a° and c° are also vertically opposite, so must be equal, which means they are 140° each.
Answer: a = 140°, b = 40° and c = 140°.
Definition: A pair of non-adjacent angles
formed by theintersection
of two straight lines
When two straight lines intersect each other,4 angles are formed (the sum of all these 4 angles is 360 degrees).In such an arrangement a pair of angles is vertically opposite to each other.Such a pair of angles are known as vertically opposite angles.They are always equal.
d. Out of these
c are vertically opp. angles and they are equal same as
d are vertically opp. angles and they are equal.