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

Slides:

Advertisements

Similar presentations

4-5 Isosceles and Equilateral Triangles. Isosceles Triangles The congruent sides of an isosceles triangle are its legs. The third side is the base. The.

Advertisements

Lesson 3-2: Isosceles Triangle

Adapted from Walch Education Isosceles triangles have at least two congruent sides, called legs. The angle created by the intersection of the legs is.

4.6 The Isosceles Triangle Theorems Base Angles and Opposite Sides Hypotenuse - Leg.

4.7 – Use Isosceles and Equilateral Triangles You know that a triangle is isosceles if it has at least two congruent sides. When an isosceles triangle.

Isosceles and Equilateral Triangles

The Isosceles Triangles Theorems Section 4-6 Isosceles Triangle Theorem  If 2 sides of a triangle are congruent, then the angles opposite those sides.

Isosceles and Equilateral Triangles Chapter 4 Section 5.

ISOSCELES TRIANGLES 1 Modified by Lisa Palen. PARTS OF AN ISOSCELES TRIANGLE An isosceles triangle is a triangle with at least two congruent sides. The.

Triangles Isosceles & Fundamentals

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.

Isosceles and Equilateral Triangles Section 5-1. Isosceles Triangle A triangle with at least two congruent sides. Leg Leg Base Vertex Angle Base Angles.

Warm-Up Find the value of x. x x - 3. GEOMETRY 4-8 Isosceles and Equilateral Triangles.

Properties of Special Triangles 4-5 Objective: To use and apply properties of isosceles and equilateral triangles.

1 4-5 Isosceles and Equilateral Triangles State and apply the Isosceles Triangle Theorem and its converse State and apply the corollaries for equilateral.

Use Isosceles and Equilateral Triangles

4-6 Isosceles & Equilateral Triangles

4.5: Isosceles and Equilateral Triangles Objective: To use and apply properties of isosceles and equilateral triangles.

4-5 Isosceles and Equilateral Triangles

Isosceles Triangles Sec: 4.6 Sol: G.5. Isosceles Triangles Sec: 4.6 Sol: G.5.

CH. 4.7 USE ISOSCELES & EQUILATERAL TRIANGLES. VOCAB Leg: 2 sides of isosceles triangle Leg Vertex Angle: Angle formed by the two legs Base: 3 rd side.

Geometry Ms. Stawicki.  1) To use and apply properties of isosceles triangles.

Triangles Review.

5.4 – Equilateral and Isosceles Triangles

Section 4-4: The Isosceles Triangle Theorems

Section 4-5: Isosceles and Equilateral Triangles.

Isosceles and Equilateral Triangles Geometry H2 (Holt 4-9) K.Santos.

Triangle Sum Theorem The sum of the angle measures in a triangle is 180 degrees.

4.3 ISOSCELES AND EQUILATERAL TRIANGLES. VOCABULARY Two angles of an isosceles triangle are always congruent. These are the angles opposite the congruent.

Isosceles and Equilateral Triangles

Triangle Congruence 4.5 Isosceles and Equilateral Triangles.

Isosceles Triangles Theorems Theorem 8.12 – If two sides of a triangle are equal in measure, then the angles opposite those sides are equal in measure.

October 8,  As we discussed in a previous section isosceles triangles are triangles with at least two sides congruent.  The two congruent sides.

Applied Geometry Lesson: 6 – 4 Isosceles Triangles Objective: Learn to identify and use properties of isosceles triangles.

Have your yellow packet out from Tuesday please.

Isosceles Triangles A B C

Isosceles and Equilateral Triangles

4-5 Isosceles and Equilateral Triangles

Warm Up [On back counter]

The Isosceles Triangle Theorems

Chapter 4: Congruent Triangles

Lesson 3-2: Isosceles Triangle

4.7 Use Isosceles and Equilateral Triangles

Date: Topic: Isosceles Triangle Theorem (6.1.C)

4.7 – Use Isosceles and Equilateral Triangles

Lesson 4.6 Isosceles Triangles.

Isosceles & Equilateral Triangles

Triangle Fundamentals

Types of Triangles and Their Properties

Proving Theorems about Isosceles Triangles (5.6.2)

Section 4.5 isosceles & equilateral triangles

Triangles Review.

Lesson 3-2 Isosceles Triangles.

5.4 Equilateral and Isosceles Triangles

4.5 - Isosceles and Equilateral Triangles

The Isosceles Triangle Theorems

7.2 Isosceles and Equilateral Triangles

Mod 15.2: Isosceles and Equilateral Triangles

Triangle Fundamentals

Isosceles, Equilateral, and Right Triangles

Isosceles and Equilateral Triangles

5.4 Isosceles and Equilateral Triangles.

Isosceles, Equilateral, and Right Triangles

5-7 Isosceles and Equilateral Triangles

Equilateral TRIANGLES

Lesson 3-2 Isosceles Triangles.

Isosceles and Equilateral Triangles

Module 15: Lesson 2 Isosceles & Equilateral Triangles

Lesson 3-2 Isosceles Triangles.

Section 3.3 Isosceles Triangles

Presentation transcript:

1 Isosceles and Equilateral Triangles

2 Parts of an Isosceles Triangle An isosceles triangle is a triangle with two congruent sides. The congruent sides are called legs and the third side is called the base. 3 Leg Base 21 Ð 1 and Ð 2 are base angles Ð 3 is the vertex angle

Isosceles Triangle Theorems Example: x ° 50 ° Find the value of x. A B C If two sides of a triangle are congruent, then the angles opposite those sides are congruent.

Isosceles Triangle Theorems If two angles of a triangle are congruent, then the sides opposite those angles are congruent. Example:Find the value of x. A B C 50 ° ° 3x - 7 x+15 A B C

5 Equilateral Triangles Equilateral: A triangle in which all 3 sides are equal. G H I GH = 3.7 cm GI = 3.70cm HI = 3.7 cm

Equilateral Triangle Theorems If a triangle is equilateral, then it is equiangular. If a triangle is equilateral, then it is equiangular. T S R 15 in. If a triangle is equiangular, then it is equilateral. If a triangle is equiangular, then it is equilateral. What is the length of each side and angle?