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Published byVictoria Riley
Modified over 3 years ago
Triangles By Christine Berg Edited By VTHamilton
Can be classified by the number of congruent sidesTriangles Can be classified by the number of congruent sides
Scalene Triangle Has no congruent sides
Has at least two congruent sidesIsosceles Triangle Has at least two congruent sides
Has three congruent sidesEquilateral Triangle Has three congruent sides
Can be classified by the angle measuresTriangles Can be classified by the angle measures
Right Triangle Has one right angle
Acute Triangle Has three acute angles
Triangle with one obtuse angleObtuse Triangle Triangle with one obtuse angle
Cut any shape triangle out of a sheet of paperTriangles Cut any shape triangle out of a sheet of paper
Tear off the corners. Piece them together by having the corners touch.Triangles Tear off the corners. Piece them together by having the corners touch.
The corners form what type of angle?Triangles The corners form what type of angle?
The sum of the angles of a triangle is 180 degreesTriangles The sum of the angles of a triangle is 180 degrees
To find a missing angle, add up the 2 given anglesTriangles To find a missing angle, add up the 2 given angles
Subtract the sum from 180 and you have the missing angleTriangles Subtract the sum from 180 and you have the missing angle
Have the same SIZE and the same SHAPECongruent Triangles Have the same SIZE and the same SHAPE
May be flipped and/or rotatedCongruent Triangles May be flipped and/or rotated
Congruent Triangles BE CAREFUL WHEN YOU NAME THE SHAPE
Name congruent CORRESPONDING partsCongruent Triangles Name congruent CORRESPONDING parts (sides and angles) IN ORDER
Make sure the letters are in CORRESPONDING orderCongruent Triangles Make sure the letters are in CORRESPONDING order
ABC is congruent to DEF B F E D A C
One for you Name the congruent triangles remembering to name the angles in order F E Z D Y X
Classifying Triangles. Two Ways to Classify Triangles By Their Sides By Their Angles.
Sum of Angles in Triangles. Triangles classified by sides A scalene triangle has no congruent sides. An isosceles triangle has at least 2 congruent sides.
Triangles Objective: Learn to name and classify triangles.
Classify Triangles Classify triangles by the lengths of their sides and their angles.
Classifying Triangles Students will classify triangles using the lengths of the sides and the angles. S. Calahan October 2010.
Introduction to Angles and Triangles
Report by Jennifer Johnson
Activity You can find the sum of the angle measures in a triangle. Triangles Cut a triangle from the corner of a piece of paper. Label the corners.
Triangles Galore!. Triangles Galore! Classification By Angle Acute triangle Obtuse triangle Right triangle.
Classifying Triangles Lesson Classifying by Angle Acute triangles have three acute angles. Obtuse triangles have one obtuse angle. Right triangles.
Warm Up Types of Triangle Chapter 3.6 Objective- name the various types of triangles and their parts.
Lesson 8.3 Concept: How to classify triangles by their sides and angles. An equilateral triangle has three sides of the same length. An isosceles triangle.
Bell Work Name the Angle in four different ways
Classify Triangles Standard 4C.
Classifying Triangles How many degrees can be found in all triangles? 180 We can classify triangles 2 ways: By their angles By their sides.
Classifying Triangles. Classifying Triangles By Their Angles Acute Right Obtuse.
Classifying Triangles. What do we remember about classifying angles? What are the different types of angles? Acute, right, obtuse, and straight.
Triangles and Angles.
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