Presentation on theme: "Bell Work Name the Angle in four different ways"— Presentation transcript:
1 Bell Work Name the Angle in four different ways Cvertexside11) Use the vertex and a point from each side.ABCorCBAThe vertex letter is always in the middle.2) Use the vertex only.BThis only works if there is only one angle at a vertex.3) Use a number.1
3 2 Ways to Classify By Side Length By Angle Measurement Equilateral IsoscelesScaleneBy Angle MeasurementRightObtuseAcute
4 Side Length Equilateral An Equilateral triangle is a triangle where all three side lengths are congruent.The dashes on the sides of the triangle mean they are the same length (congruent).Remember: Congruent just means equal is the symbol used for congruent.
5 Side Length IsoscelesAn isosceles triangle is a triangle where at least two sides are congruent.The dashes on the sides of the triangle mean they are the same length (congruent).
6 Side Length ScaleneA scalene triangle is a triangle where all three sides have different measures.The different numbered dashes on the sides of the triangle mean they are all different lengths.
7 Angle Measurement Right A right triangle is a triangle that has exactly one right angle.The box in the corner of a triangle represents a right angle. Remember that a right angle is an angle that measures 90⁰.
8 Angle Measurement Obtuse An obtuse triangle is a triangle that has exactly one obtuse angle. Remember that an obtuse angle is an angle that is greater than 90⁰.
9 Angle Measurement Acute An acute triangle is a triangle where all three angles are acute. Remember that an acute angle is an angle that is less than 90⁰.
10 Equiangular TriangleA triangle with all angles equal (60°). The same as an Equilateral Triangle
11 You Try: Obtuse Isosclese Triangle Name the triangle by its angles and sidesObtuse IsoscleseTriangle
12 Right Scalene Triangle You Try:Name the triangle by it’s angles and sidesRight Scalene Triangle