Triangles 1st year P26 Chapter 4.

Slides:

Advertisements

Similar presentations

Triangles TOPIC 9 LESSON 9-5.

Advertisements

TRIANGLES AND TYPES OF TRIANGLES

Mathematics Types of Triangles By: Jenny Ordonez.

Classifying Triangles Students will classify triangles using the lengths of the sides and the angles. S. Calahan October 2010.

4.5 Isosceles and Equilateral Triangles. Isosceles Triangles At least two sides are of equal length. It also has two congruent angles. Base Angles Base.

4-6 Isosceles & Equilateral Triangles

1 Isosceles and Equilateral Triangles. 2 Parts of an Isosceles Triangle An isosceles triangle is a triangle with two congruent sides. The congruent sides.

Triangles Review.

Defining Triangles During this lesson, you will define triangles and their parts.

- Four sides - Four angles - Four vertices  - The diagonals are equal in length and perpendicular and bisect each other.

Types of 2 D Shapes and There Properties 1)A shape with 3 sides is called a triangle 2)A shape with 4 sides is called a quadrilateral 3)The general term.

Triangle A polygon with three sides and three angles. A triangle can be names by its’ side lengths and angles. – Side lengths: isosceles, equilateral,

Triangles and Lines – Introduction to Triangles

Angle and Triangle Flash Cards

TRIANGLES AND TYPES OF TRIANGLES. A triangle has three sides.

Types of Triangles. Equilateral Triangle All sides are the same length and all the angles are the same length.

Types of Triangles. Angles The angles in a triangle add up to o + 60 o + 60 o =

Triangles Who Wants To Be A Millionaire? Question 1.

Warm Up Types of Triangle Chapter 3.6 Objective- name the various types of triangles and their parts.

TRIANGLES AND TYPES OF TRIANGLES. What is a TRIANGLE ? A closed figure formed by joining three line segments is called a TRIANGLE.

Triangles Shapes with 3 sides! Equilateral Triangle All 3 Sides are equal in Length All 3 interior angles are the same.

Abney V. Martinez. Tell which shapes are polygons.  A polygon is a closed plane figure made up of line segments.  Each line segment is a side.  The.

D B A C 3.2—Isosceles and Equilateral Triangles. Objective: Use properties of _______________, and ________________triangles. equilateral Vocabulary:

Triangle Congruence 4.5 Isosceles and Equilateral Triangles.

Equilateral, Isosceles, Scalene, Right, Acute, Obtuse Types of Triangles.

Triangles Objective: Learn to name and classify triangles.

Time for Triangles. What is a triangle? A triangle is a polygon. It has 3 sides and 3 angles. It can also be called a trigon.

Find the value of x. 1. x + 2x + 3x = 180 6x = x + x + 40 = x + (x + 1) + 35 = x + 40 = 180 x = 70 3x + 36 = x = 48.

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. Two Ways to Classify Triangles  By Their Sides  By Their Angles.

Objective Be able to use angle facts to solve problems in geometry.

Scalene triangle: A scalene triangle is a triangle that has no equal sides. The following is a scalene triangle.

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.

Geometry Triangles What is a Triangle? A three sided convex polygon. A three sided convex polygon. Its three segments are called sides. Its three segments.

Learning Objective Identify triangles using their sides.

Mathematics Types of Triangles.

Who Wants To Be A Millionaire?

Angles In Triangles Types of Triangles Isosceles triangle

Classifying Triangles

4.7 – Use Isosceles and Equilateral Triangles

Classifying Triangles

Angles In Triangles Types of Triangles Isosceles triangle

Classifying Triangles

TRIANGLES AND TYPES OF TRIANGLES

Triangles Review.

Classifying Triangles

Triangles Created by G. Antidormi 2005.

Angles In Triangles Types of Triangles Isosceles triangle

Classifying Triangles

Classifying Triangles

Objective - To classify triangles.

7.2 Isosceles and Equilateral Triangles

Classifying Triangles

Identify type of triangle

Types of Triangles Thursday, 11 April 2019.

Types of Triangles Thursday, 11 April 2019.

Front of Flipbook Right Triangles Acute Triangles Obtuse Triangles

Intro to Triangles.

Classifying Triangles

Equilateral – equal All sides are equal length.

Classifying Triangles

Presentation transcript:

Triangles 1st year P26 Chapter 4

Triangle All 3 angles of a triangle must add up to 180 degrees There are 3 types of triangles Equilateral Isosceles Scalene

3 different types of Triangles Equilateral All sides are the same Length and angles are 60 degrees

3 different types of Triangles Isosceles 2 sides are the same length

3 different types of Triangles Scalene All 3 sides different lengths Angles are all different sizes

How to construct an equilateral Triangle V Draw base line at given measurement. Either end of the line draw lines up at 60 degrees. Where they meet is the vertex

How to draw an Isosceles Triangle What do we know???? 2 sides are equal in length and 2 base angles are the same angle. Use vertically opposite angles to work out base angle Vertically opposite angle means the angle above the point is equal to the angle below 70 There if all angles of a triangle equal 180 degrees 180 - 70 110 ÷ 2 = 55 Base angles are 55 degrees each

Questions

Exam Practice