Display Title

Definition--Angle Concepts--Obtuse Angle

Obtuse Angle

Obtuse Angle

Topic

Angles

Definition

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Description

Obtuse angles are found in various geometric shapes and real-world structures, playing a crucial role in determining the types of triangles based on their angles. For example, a triangle with one obtuse angle is known as an obtuse triangle. In real-world applications, obtuse angles are seen in the design of ramps, bridges, and other architectural elements where specific angle measurements are necessary for functionality and aesthetics. In mathematics education, obtuse angles help students understand the concept of angle measurement and classification, forming a basis for more complex geometric reasoning.

Obtuse Angle
Do you see the obtuse angle 
formed by the gull's wings?

For a complete collection of terms related to Angles click on this link: Angles Collection.

Common Core Standards CCSS.MATH.CONTENT.2.G.A.1, CCSS.MATH.CONTENT.4.MD.C.5, CCSS.MATH.CONTENT.4.G.A.1, CCSS.MATH.CONTENT.7.G.B.5
Grade Range 4 - 8
Curriculum Nodes Geometry
    • Angles and Planes
        • Definition of an Angle
Copyright Year 2013
Keywords angle, definitions, glossary term