Picture Vocabulary

Geometric Shapes and Their Definitions

Geometric Shapes Vocabulary with Explanation

Geometric shapes are the very basic part of primary classes in Mathematics. Kids learn different geometric shapes in their 1st, 2nd, and 3rd grades. This post will cover the names, images, and definitions of these geometric shapes in English.

Point

Point shape

A small dot-like shape to show the place of something is known as a point.

Segment

Segment

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The part of a line b/w any two points on the line.

Ray

Ray

Ray

The half line is known as a ray.

Line

Line

Line

A line is a collection of continuous points in both directions.

Angle

Angle

Angle

An angle is formed when two rays share an endpoint.

Circle

Circle

Circle

The locus of equal distance point from the central point.

Oval

Oval

Oval

Any curve that looks like an egg.

Polygon

Polygon shape

Polygon

Any closed flat figure with three or more sides.

Acute angle

Acute angle shape

Acute angle shape

It is an angle whose measure is <90o.

Right Angle

Right angle shape

Right angle shape

An angle whose measure = 90o.

Obtuse angle

Obtuse angle shape

Obtuse angle shape

An angle whose measure is >90o.

Straight angle

Straight angle

Straight angle

It is an angle whose measure =180o.

Acute triangle

Acute Triangle

Acute Triangle

 In this triangle, three interior angles are not greater than 90o in measure.

Scalene Triangle

Scalene Triangle

Scalene Triangle

A triangle with 3 sides that are not equal to each other.

Isosceles Triangle

Isosceles Triangle

Isosceles Triangle

A triangle has 2 compatible sides.

Right Triangle

Right Triangle

Right Triangle

A triangle with a 90o angle.

Equilateral Triangle

Equilateral Triangle

Equilateral Triangle

A triangle has 3 compatible sides & 3 compatible interior angles.

Perpendicular

Perpendicular

Perpendicular

2 co-planer lines that cross at right angles.

Parallel

Parallel

Parallel

Co-planer lines that do not cross each other at all.

Geometric Shapes Vocabulary in English

Geometric Shapes Vocabulary in English