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Published byVictoria Riley
Modified over 2 years ago
Triangles By Christine Berg Edited By VTHamilton
Triangles Can be classified by the number of congruent sides
Scalene Triangle Has no congruent sides
Isosceles Triangle Has at least two congruent sides
Equilateral Triangle Has three congruent sides
Triangles Can be classified by the angle measures
Right Triangle Has one right angle
Acute Triangle Has three acute angles
Obtuse Triangle Triangle with one obtuse angle
Triangles Cut any shape triangle out of a sheet of paper
Triangles Tear off the corners. Piece them together by having the corners touch.
Triangles The corners form what type of angle?
Triangles The sum of the angles of a triangle is 180 degrees
Triangles To find a missing angle, add up the 2 given angles
Triangles Subtract the sum from 180 and you have the missing angle
Have the same SIZE and the same SHAPE
Congruent Triangles May be flipped and/or rotated
Congruent Triangles BE CAREFUL WHEN YOU NAME THE SHAPE
Congruent Triangles Name congruent CORRESPONDING parts (sides and angles) IN ORDER
Congruent Triangles Make sure the letters are in CORRESPONDING order
ABC is congruent to DEF A B C D E F
One for you Name the congruent triangles remembering to name the angles in order X Y D E F Z
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Types of Triangles Scalene A triangle with no congruent sides Isosceles A triangle with 2 congruent sides and angles opposite the congruent sides are.
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Study Notes Geometry. Symmetry You will need to know how to complete a congruent side of a picture To do this, you may choose from one of the following.
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