Opposite of TRIANGLE – 35 Antonyms With Sentence Examples

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Antonyms for triangles are shapes that are not classified as triangles due to their different defining characteristics. Triangles are polygons with three straight sides and three angles. Antonyms for triangles, therefore, refer to shapes that do not meet this specific criteria.

Common antonyms for triangles include circles, squares, rectangles, and pentagons. These shapes have a varying number of sides and angles, and differ in their geometric properties from triangles. While triangles are commonly associated with structures and designs due to their stability and versatility, their antonyms present a different set of possibilities in shape manipulation and mathematical applications.

By understanding the antonyms for triangles, one can broaden their knowledge of geometric shapes and enhance their ability to differentiate between various forms. Recognizing these antonyms can also stimulate creativity in design and problem-solving, as different shapes offer diverse opportunities for exploration and experimentation in various fields such as art, architecture, and mathematics.

35 Antonyms for TRIANGLE With Sentences

Here’s a complete list of opposite for triangle. Practice and let us know if you have any questions regarding TRIANGLE antonyms.

Antonym Sentence with Triangle Sentence with Antonym
Square The triangle had three sides. The square had four equal sides.
Round A right-angled triangle has one angle at 90 degrees. A curved round shape has no angles.
Straight The triangle was made up of straight lines. The curved shape was irregular.
Empty The triangle was filled with colorful patterns. The container was empty and hollow.
Solid The triangle was a 2D shape. The cuboid was a 3D shape.
Interior The triangle‘s interior angles added up to 180 degrees. The exterior of the shape was jagged.
Asymmetric The equilateral triangle had three equal sides. The shape was asymmetric and irregular.
Wide The triangle had three points at each corner. The shape was wide instead of narrow.
Rounded The triangle had sharp corners. The shape was rounded and smooth.
Open The vertices of the triangle were all connected. The shape was open with gaps.
Infinite The sides of the triangle were predetermined lengths. The shape was infinite and continuous.
Concave The triangle was a basic polygon shape. The shape was concave and curved inward.
Circle The triangle was a 2D geometric figure. The circle was a round 2D shape.
Opaque The triangle was translucent. The opaque shape was not see-through.
Irregular The angles of the triangle were carefully measured. The shape was irregular and random.
Assemble The triangle components were put together. The shape would disassemble easily.
Exterior The triangle‘s angles were on the inside. The angles of the shape were on the exterior.
Roundabout The triangle path was direct. The path was roundabout and winding.
Circular The triangle displayed three sides. The circle displayed no sides.
Full The triangle outline was complete. The space was full of various shapes.
Interlock The triangle pieces fit perfectly. The pieces would not interlock.
Finish The triangle sketch was incomplete. The artwork was almost ready to finish.
Dense The triangle was a simple 3-sided figure. The shape was dense and complex.
Void The triangle shape was recognizable. The space was an empty void.
Linear The triangle shape consisted of three straight sides. The shape was linear and continuous.
Incomplete The triangle was a complete geometric figure. The shape was incomplete and unfinished.
Intact The triangle structure was solid and secure. The structure was broken and not intact.
Connected The triangle‘s corners were not touching. The pieces were all connected continuously.
Internal The triangle shape had three sides. The shape’s characteristics were internal.
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Final Thoughts about Antonyms of TRIANGLE

In geometry, a triangle is a three-sided polygon with distinct angles and sides. However, shapes that are not triangles can have varying numbers of sides and angles, such as circles being round and infinite with no corners, while squares have four equal sides and angles. Triangles are three-dimensional shapes that are different from flat shapes like rectangles and squares, which are two-dimensional. It is important to understand the distinctions between various shapes to accurately classify and describe them in mathematics and everyday life. Differentiating between shapes like triangles and circles helps us understand and solve problems in geometry effectively.