Question

Definition and properties of angles for 7th standard

Answer 1

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Ans = Useful Terms

Parallel Lines - lines that are equidistant from each other and never intersect.

Transversal - a line that intersects two or more other lines.

Adjacent Angles - angles that share a common side and that have a common vertex.

Complementary Angles

Complementary Angles are those which add together to make 90°.

Supplementary Angles

Supplementary Angles add together to make 180°

Opposite Angles

When to lines intersect they create four angles. Each angle is opposite to another and form a pair of what are called opposite angles.

Corresponding and Alternate Angles

The example below shows two parallel lines and a transversal (a line that cross two or more other lines). This results in eight angles. Each of these angles has a corresponding angle. Looking at the two intersections, the angles that are in the same relative (or corresponding) positions are called corresponding angles.

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