*4-2 Angles of Triangles You classified triangles by their side or angle measures. Apply the Triangle Angle-Sum Theorem. Apply the Exterior Angle Theorem.*

*The measure of any exterior angle of a triangle is proven to be equal to the sum of the measures of the two non-adjacent interior angles. Info for homework.*

*Angles of Triangles 3-4 Angles of Triangles 3-4 EXAMPLE 1 Classify triangles by sides and by angles SOLUTION The triangle has a pair of congruent sides, so it is ...*

*4.1 Triangles and Angles Equilateral 3 congruent sides Isosceles Triangle 2 congruent sides Scalene 0 congruent sides Triangles can be classified by the sides or by ...*

*3.5 Parallel Lines and Triangles Parallel Postulate Through a point not on a line, there is one and only one line parallel to the given line. Triangle Angle-Sum ...*

*Exterior Angle Theorem. The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles of a triangle.*

*4.2: Angle Relationships in Triangles. The measure of one of the acute angles in a right triangle is 63.7 Â°. What is the measure of the other acute angle?*

*EXTERIOR ANGLE THEOREM ACTIVITY inb. Give the students a quarter sheet of blank paper and have them make a triangle with a ruler (as big as the paper).*

*Section 3-4: The Polygon Angle-Sum Theorem. Goal 2.03: Apply properties, definitions, and theorems of two-dimensional figures to solve problems and write proofs: c ...*

*Geometry Lesson 4 â€“ 2 Angles of Triangles Objective: Apply the triangle Angle-Sum Theorem. Apply the Exterior Angle Theorem. Triangle Angle-Sum Theorem Triangle ...*

*Angles and Triangles Angles A shape formed by two rays sharing a common endpoint; contains two rays and a vertex Types of Angles Acute angle: An angle whose measure ...*

*5.1 Angles of Triangles. ... The measure of an exterior angle of a triangle is equal to the sum of the measures of the two nonadjacent interior angles.*

*Properties of Triangles Objectives: E Grade Show that the angles of a triangle add up to 180o and use this to find angles. Show that the exterior angle of a triangle ...*

*Aim: Whatâ€™s outside the triangle? Do Now: 360 Find the measure of angle z. B 470 z C A 83 + z = 180 47 + 36 + z = 180 x Find the measure of angle z and x.*

*Exterior Angle Theorem(your new best friend) The measure of an exterior angle in a triangle is the . sum. of the measures of the 2 . remote interior*

*Show that the exterior angle of a triangle is equal to the sum of the interior opposite angles. Use angle properties of isosceles, equilateral and right-angled triangles.*

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