Year 8 Maths
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Angle and Parallel Line Checkup
Line and Rotational Symmetry
Classifying Triangles
Angle Sum of a Triangle
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Missing Triangle Angles
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Classifying Quadrilaterals
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No,
an equilateral triangle has three congruent sides, and therefore has three congruent angles. Because the interior angles of an equilateral triangle each equal 60°, there are no obtuse angles (an angle that is greater than 90°).
continue learning about triangle classifications.