Types of Triangles Thursday, 11 April 2019.

Slides:

Advertisements

Similar presentations

Triangles TOPIC 9 LESSON 9-5.

Advertisements

TRIANGLES AND TYPES OF TRIANGLES

7/3/2015 Geometry 1 Classifying Triangles Free powerpoints at

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.

Classify Triangles Standard 4C.

4-6 Isosceles & Equilateral Triangles

EQUILATERAL & ISOSCELES Quiz tomorrow. CLASSIFY the triangle by ANGLES and SIDES Angles: acute, obtuse, right Sides:equilateral, isosceles, scalene 91.

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.

Let’s revise some angles Angles What names of angles do you know? ACUTE RIGHT ANGLE OBTUSEREFLEX Less than 90 o Exactly 90 o Between 90 o and 180 o Between.

Shapes and their properties. What am I? I have 2 pairs of equal sides I have 2 pairs of parallel sides I have 0 lines of symmetry I have no right-angles.

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 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.

Triangles 1st year P26 Chapter 4.

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

SHAPE JUNGLE Triangles, Squares and Rectangles Symmetry and Angles.

Classifying Triangles Math 7 Ms. Conway Math 7 Ms. Conway.

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

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

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

Warm Up # 4 Classify and name each angle. 1 ab c d.

Classifying Triangles How many degrees can be found in all triangles? 180 We can classify triangles 2 ways: By their angles By their sides.

3/9/2016 Geometry 1 Classifying Triangles Free powerpoints at

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

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.

Learning Objective Identify triangles using their sides.

4.1 Triangle Angle Sum and Properties. How many degrees in a triangle? The sum of the angles in any triangle is exactly 180 degrees.

Mathematics Types of Triangles.

Angles In Triangles Types of Triangles Isosceles triangle

Classifying Triangles by sides and angles

All about Triangles Ask Boffin!.

Classifying Triangles

TRIANGLES BY ASHANTI.

TRI NGLES 2 ways to classify: By Sides By Angles 60 4” 4” 4” 60 60

Classifying Triangles

Angles In Triangles Types of Triangles Isosceles triangle

TRIANGLES AND TYPES OF TRIANGLES

Classifying Triangles

Classifying Triangles

Identify type of triangle

Angles In Triangles Types of Triangles Isosceles triangle

Right Triangle Definition: A triangle with one 90 degree angle.

Classifying Triangles

Classifying Triangles

Classifying Triangles

Classifying Triangles

Objective - To classify triangles.

Triangles Guided Notes

Types of quadrilaterals

Identify type of triangle

Classifying Triangles

Types of Triangles Thursday, 11 April 2019.

4-1 Vocabulary Acute triangle Equiangular triangle Right triangle

Front of Flipbook Right Triangles Acute Triangles Obtuse Triangles

Intro to Triangles.

Classifying Triangles

Equilateral – equal All sides are equal length.

TWO SIDES-ANGLE AND PERIMETER-RATIO

Classifying Triangles

4-1 Classifying Triangles

Area and Perimeter Triangles.

Classifying Triangles

Presentation transcript:

Types of Triangles Thursday, 11 April 2019

The equilateral triangle Properties All sides are of the same length All angles are of the same size, 60 It has three lines of symmetry It has rotational symmetry of order 3

2. The isosceles triangle Properties Has two sides of the same length Has two angles are of the same size It has one line of symmetry

3. The right-angled triangle Properties Has one angle of 90

3. The scalene triangle Properties All three sides are of different lengths

Right-angle Isosceles Scalene Example Write down the name for each of the following triangles (a) Right-angle (b) Isosceles (c) Scalene

(d) Scalene (e) Isosceles (f) Equilateral