Answer :
Angle can be a 90 degree angle or a 180 degree angle based on facts and the figures b and C are called vertical angles Option(d) is correct.
What are Angles?
An angle is a mathematical shape framed by the convergence of two line fragments, lines, or beams.
Angles are a proportion of rotational distance as stood out from straight distance. An angle can likewise be considered a small part of a circle. The angle between the two line sections is the distance (estimated in degrees or radians) that one portion should be pivoted around the meeting point so the two fragments cross-over.
Angles are mean quite a bit to characterizing and concentrating on polygons like triangles and quadrilaterals. They are utilized in various disciplines, going from movement to carpentry to material science.
The two inverse angles shaped by a couple of crossing lines are called vertical angles. These angles have equivalent measures.
Therefore Option(d) is correct.
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