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Lines in Geometry- Definition, Types and Examples

Geometry

Last Updated : 12 Jun, 2025

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Geometry is a branch of mathematics that studies the properties, measurements, and relationships of points, lines, angles, surfaces, and solids. From basic lines and angles to complex structures, it helps us understand the world around us.

Geometry in Maths

Geometry for Students and Beginners

This section covers key branches of geometry:

Branches of Geometry

Algebraic Geometry
Discrete Geometry
Differential Geometry
Euclidean Geometry
Non-Euclidean Geometry
Geometry Topics

This section introduces fundamental geometry topics, including points, lines, angles, triangles, quadrilaterals, circles, and polygons. You'll also learn key theorems and real-life applications of geometry.

Points, Lines and Planes
Lines and angles
Lines in Geometry
Types Of Angles
Angle relationships
Triangles in Geometry
Congruence of Triangles
Similar Triangles
Thales’s Theorem
Criteria for Similarity of Triangles
Pythagoras' Theorem and its Converse
Quadrilaterals
Types of Quadrilaterals
Angle Sum Property of a Quadrilateral
Cyclic Quadrilateral
Properties of Parallelograms
Circles
Circle Theorems
Inscribed Shapes in a Circle
Lengths of tangents drawn from an external point to a circle are equal
Types of Polygons
Polygon Formula
Real life Application of Geometry

Geometry Practice Questions

This section provides practice questions on various geometry topics, including triangles, congruence, quadrilaterals, properties of parallelograms, and areas of sectors and segments of a circle.

Geometry Aptitude Question Answers
Practice Questions on Triangles
Practice Questions on Congruence of Triangles
Practice Question on Quadrilaterals
Practice Questions on Properties of Parallelogram
Areas of Sector and Segment of a Circle Practice Problems

Geometry for Programmers

This section focuses on geometry for programmers, covering calculations for diagonals, angles, triangle similarity, congruency, and Pythagorean triplets.

Program to calculate the length of the diagonal in a rectangle
Program to find the Interior and Exterior Angle of a Regular Polygon
Computational Geometry
Program to check the similarity of two triangles
Program to check the congruency of two triangles
3 Sum – Pythagorean Triplet in an array
Find the Pythagorean Triplet with the given sum

Lines in Geometry- Definition, Types and Examples

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