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  2. Obtuse Triangle: Area, Examples, and Formulas - Lesson -...

    study.com/academy/lesson/what-is-an-obtuse-triangle...

    Since the sum of the interior angles of an obtuse triangle equals 180 degrees, and because an obtuse angle is greater than 90 degrees, an obtuse triangle can only have one obtuse angle. Within an ...

  3. Obtuse Triangle: Area, Examples, and Formulas - Video - Study.com

    study.com/academy/lesson/video/what-is-an-obtuse-triangle...

    An obtuse triangle is a triangle containing an obtuse angle. The formula for an obtuse triangle's area is:A = 1/2 (b * h)Where b is the length of the triangle's base and h is the triangle's height.

  4. Obtuse Angle | Definition, Properties & Examples - Study.com

    study.com/.../what-is-an-obtuse-angle-definition-examples.html

    Obtuse Angle Example. The obtuse angle definition is based on angle size. Obtuse angles are always between 90 and 180 degrees. The obtuse angle degree range must always be greater than 90 and less ...

  5. Scalene Triangle | Definition, Types & Examples - Study.com

    study.com/academy/lesson/what-is-a-scalene-triangle...

    Types of Scalene Triangles. There are three types of scalene triangles: Acute, obtuse, and right. Acute scalene triangles have three interior angles measuring less than ninety degrees. Because ...

  6. How to Classify Triangles | Overview & Examples - Lesson -...

    study.com/academy/lesson/classifying-triangles-by-angles...

    Triangles are geometrical shapes defined by having three vertices, three sides, and three interior angles that sum to 180{eq}° {/eq}. Interior angles are the angles that lie within the triangle ...

  7. Quiz & Worksheet - Obtuse Triangles | Study.com

    study.com/academy/practice/quiz-worksheet-obtuse-triangles...

    1. What is the area of the following obtuse triangle? 8 sq. ft. 16 sq. ft. 24 sq. ft. 32 sq. ft. 2. Which of the following are possible angle measurements of an obtuse triangle? 90, 45, 45.

  8. Orthocenter | Definition, Formula & Properties - Lesson -...

    study.com/academy/lesson/orthocenter-in-geometry...

    Orthocenter Properties. The orthocenter of acute, right, and obtuse triangles have specific properties. 1. The orthocenter of an acute triangle (where all angles are less than 90 degrees) lies ...

  9. Acute Triangle | Overview, Sides & Examples - Lesson - Study.com

    study.com/academy/lesson/what-is-an-acute-triangle...

    An acute triangle is defined as a triangle in which all three angles are acute angles, or angles that measure less than 90 degrees. In an acute triangle, all angles measure less than 90 degrees ...

  10. Types of Triangles & Their Properties - Lesson - Study.com

    study.com/academy/lesson/types-of-triangles-their...

    This is a triangle with two acute angles and one obtuse angle, where an obtuse angle is an angle that measures greater than 90 degrees. There are also many properties that these different types of ...

  11. Altitude, Median & Angle Bisector of a Triangle - Lesson -...

    study.com/academy/lesson/median-altitude-and-angle...

    Altitude of a Triangle. The altitude of a triangle is formed by a perpendicular segment coming from a vertex to the opposite side of the triangle. Remember, perpendicular means that when the ...