Have out your notebook. Review Ray Segment Line Point

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Classifying Triangles

Have out your notebook

ReviewRaySegmentLinePoint

ReviewHow many points do you need to draw a line?

ReviewDo you know how to write lines, segments, rays, and points using letters and symbols above them?

ReviewWhy did we talk about Buzz Lightyear?

What does “congruent” mean?

Scalene TriangleScalene triangles have no congruent sides.

Isosceles TriangleIsosceles triangles have two congruent sides (also angles).

Equilateral TriangleEquilateral triangles have three congruent sides (also angles).

Acute TriangleAn acute triangle has three acute angles.

Right TriangleA right triangle has one right angle.

Obtuse TriangleAn obtuse triangle has one obtuse angle.

Classifying TrianglesBy Sides (Equilateral, Isosceles, and Scalene)

By Angles (Obtuse, Right, and Acute)

Writing AnglesJKL J

K L

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