6th Maths : Term 1 Unit 4 : Geometry : Summary

__Summary__

● A line extends along both directions without end.

● A line segment has two end points.

● Parallel lines never meet.

● When two lines meet they are called intersecting
lines.

● When two rays have common starting point, they form
an angle at that point.

● We measure angles using protractor.

● An angle whose measure
is less than 90º is called an acute angle.

● An angle whose measure
is exactly 90º is called a right angle.

● An angle whose measure
is greater than 90º is called an obtuse angle.

● When the two rays or lines coincide, they are said
to make angle zero, that is 0º.

● Two angles are complementary when they add up
to 90º.

● Two angles are supplementary when they add up to
180º.

● Given any two points there is a unique line passing
through them.

● When three points lie on a line, they are said to
be collinear.

● When two lines meet
each other at 90°s at the point of intersection, they are called perpendicular lines.

● When three or more lines pass through the same point, they are said to be
concurrent. That point is called the Point of Concurrency.

Tags : Geometry | Term 1 Chapter 4 | 6th Maths , 6th Maths : Term 1 Unit 4 : Geometry

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6th Maths : Term 1 Unit 4 : Geometry : Summary | Geometry | Term 1 Chapter 4 | 6th Maths

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