Fill in the blank(s) to correctly complete each sentence.

A triangle that is not a right triangle is a(n) _________ triangle.

검증된 단계별 안내

Recall the classification of triangles based on their angles: a right triangle has one angle exactly equal to 90 degrees.

Understand that if a triangle does not have a right angle, it means none of its angles is 90 degrees.

Triangles without a right angle can be either acute (all angles less than 90 degrees) or obtuse (one angle greater than 90 degrees).

Therefore, a triangle that is not a right triangle is called an \(\textbf{oblique}\) triangle.

So, the blank should be filled with the word \(\textit{oblique}\) to correctly complete the sentence.

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주요 개념

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Types of Triangles Based on Angles

Triangles are classified by their angles into acute, right, and obtuse triangles. A right triangle has one 90-degree angle, while acute triangles have all angles less than 90 degrees, and obtuse triangles have one angle greater than 90 degrees.

Right Triangle Definition

A right triangle is defined as a triangle that contains exactly one right angle (90 degrees). This classification is fundamental in trigonometry because many formulas and theorems apply specifically to right triangles.

Non-Right Triangles

Triangles that do not have a right angle are called non-right triangles, which include acute and obtuse triangles. Understanding this distinction helps in applying appropriate trigonometric methods, such as the Law of Sines or Law of Cosines.

Fill in the blank(s) to correctly complete each sentence.A triangle that is not a right triangle is a(n) _________ triangle.