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Questions and Answers
What type of triangle is an obtuse isosceles?
What type of triangle is an obtuse isosceles?
- Has one obtuse angle and two equal sides (correct)
- Has one right angle and two equal sides
- Has no equal sides and all angles are acute
- Has one acute angle and three equal sides
What type of triangle is a right isosceles?
What type of triangle is a right isosceles?
- Has one right angle and two equal sides (correct)
- Has all sides equal
- Has no equal sides
- Has one obtuse angle and three unequal sides
What type of triangle is an obtuse scalene?
What type of triangle is an obtuse scalene?
- Has one right angle and two equal sides
- Has all sides equal
- Has one obtuse angle and no equal sides (correct)
- Has all angles acute
What type of triangle is an acute isosceles?
What type of triangle is an acute isosceles?
What type of triangle is a right scalene?
What type of triangle is a right scalene?
What type of triangle is equilateral?
What type of triangle is equilateral?
What type of triangle is acute scalene?
What type of triangle is acute scalene?
What type of triangle is an acute isosceles?
What type of triangle is an acute isosceles?
What type of triangles can be classified based on angles?
What type of triangles can be classified based on angles?
What type of triangles can be classified based on sides?
What type of triangles can be classified based on sides?
Define obtuse.
Define obtuse.
Define right.
Define right.
Define acute.
Define acute.
Define isosceles.
Define isosceles.
Define equilateral.
Define equilateral.
Define scalene.
Define scalene.
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Study Notes
Triangle Classification by Angles and Sides
- Obtuse Isosceles: Has one obtuse angle and two equal sides.
- Right Isosceles: Contains one right angle and two equal sides.
- Obtuse Scalene: Features one obtuse angle and all sides of different lengths.
- Acute Isosceles: Has three acute angles with two equal sides.
- Right Scalene: Contains one right angle and all sides of different lengths.
- Equilateral: All sides are equal, and all three angles are equal (each angle is 60 degrees).
Triangle Classification by Angles
- Acute: All interior angles are less than 90 degrees.
- Obtuse: Contains one interior angle greater than 90 degrees.
- Right: Includes one right angle (90 degrees).
Triangle Classification by Sides
- Isosceles: At least two sides are equal in length; equal angles are opposite these sides.
- Equilateral: All three sides and angles are equal.
- Scalene: All sides have different lengths and all angles are different.
Summary of Specific Types
- Acute Isosceles: Equal sides and angles; all angles acute.
- Right Isosceles: Equal sides, with one right angle.
- Obtuse Isosceles: Equal sides with one angle greater than 90 degrees.
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