10/10/12 Angle Rules WALT: familiarise ourselves with angle rules and use them to solve problems. S1: Answer in your books: What are parallel lines? (Draw.

Slides:

Advertisements

Similar presentations

Advertisements

Interior and Exterior Angles of Triangles. Right Angle A right angle has a measurement of 90 degrees.

Angles, Angles of Triangles and Parallel Lines. Angles  Angles are produced when two or more lines meet or cross.

CH 4.7 USE ISOSCELES AND EQUILATERAL TRIANGLES. In this section… We will use the facts that we know about isosceles and equilateral triangles to solve.

Geometry 5 Level 1. Interior angles in a triangle.

 You need to identify alternate interior angles, same-side interior angles, corresponding angles, alternate exterior angles, and same-side exterior angles.

Bell Work Name the Angle in four different ways

© T Madas. 1.Angles in a straight line add up to 180° 2.The diagonals of a rhombus meet at right angles 3.Two right angles make up a full turn 4.Perpendicular.

Angles Triangles, Quadrilaterals, Polygons. Remember Angles around a single point add up to

MEAP REVIEW. A polygon is a closed figure whose sides are made up of straight line segments that do not cross.

Missing Angles Our learning objectives today To calculate missing angles on a straight line, around a point and in a triangle. To use a protractor to draw.

Classify Triangles Standard 4C.

Geometry – Grade 5 2-D Shapes.

Choose a category. You will be given the answer. You must give the correct question. Click to begin.

Math 010: Chapter 9 Geometry Lines, figures, & triangles

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

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.

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

Possible categories: * polygons * 3 angles * 3 sides * Equilateral triangles: all sides are congruent * Scalene triangles: all sides are different.

MATH JEOPARDY by Hayley Miller Malone University MATH JEOPARDY by Hayley Miller Malone University NOW LET’S PLAY JEOPARDY!!!

Types of Triangles and Quadrilaterals “I can draw and label 2-D figures.”

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

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

Angles-Polygons-Triangles- Quadrilaterals Angles If two lines cross we say they INTERSECT. If two lines in the same plane do not intersect, we say they.

Chapters 16 and 17.  Perpendicular  Parallel  Intersecting.

By: Student Sample 1.  Acute angles  Right angles  Obtuse angles  Congruent angles  Complementary angles  Parallel lines  Intersecting lines (not.

Jeopardy Measuring Angles Triangles Hodgepodge Remember ? Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final Jeopardy Properties.

Triangles Objective: Learn to name and classify triangles.

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

9-3: Classifying Polygons Logic Activity. I am a trapezoid I have two angles that each measure 45˚ I have two other angles that each measure 135˚ #1)

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.

 An angle is a corner where two lines meet.  Angles are drawn with a small part of a circle in the corner.  Angles can be measured in degrees with.

Answer the question and advance to the next slide for your answer.

House Fire House. Can you find one or more acute angles? An acute angle is an angle with a measure of less than 90 degrees.

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.

Directions for Playing:

WALT Calculate missing angles.

Use isosceles and equilateral triangles

Polygons Essential Question:

Hosted by Your Class.

TRIANGLES BY ASHANTI.

Cut out each shape and stick it in your homework book.

Properties of Geometrical Figures

POLYGONS Polygons are 2-dimensional shapes

Properties of Geometrical Figures

Title Date To assess my understanding of triangles and angle facts.

Lesson 8.2 – 8.3 Angles, Triangles and Quadrilaterals

TODAY : Triangles -Triangle notes -classifying triangle worksheet

Triangles TeacherTwins©2014.

Learning Journey – Angles

Types of Triangles.

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

Hosted by Your Class.

Classifying Triangles

Objective - To classify triangles.

Classifying Triangles

Triangles Guided Notes

ANGLES ON A STRAIGHT LINE ADD UP TO 180°

Hosted by Your Class.

Drill 1) x = 180, solve for x 2) How many degrees do the interior angles of a triangle add up to. 3) What type of triangle has an angle that.

ANGLE PROPERTIES.

Classifying Triangles

to find angles in special triangles

Presentation transcript:

10/10/12 Angle Rules WALT: familiarise ourselves with angle rules and use them to solve problems. S1: Answer in your books: What are parallel lines? (Draw a diagram). What are perpendicular lines? (Draw a diagram).

There are three types of angles... Facts: There are three types of angles... Lets have a quick practise... Obtuse Acute Reflex

Angles on a straight line add up to... Rule 1: Angles on a straight line add up to... 180 degrees.

Angles around a point add up to.... Rule 2: Angles around a point add up to.... 360 degrees.

Angles in a triangle add up to... Rule 3: Angles in a triangle add up to... 180 degrees.

Angles in a quadrilateral add up to... Rule 4: Angles in a quadrilateral add up to... 180 degrees.

Complete the true/false task in front of you. Organise them on a spare part of your desk, when you are confident and have discussed with your partner, stick them into your books in table form.

True False A reflex angle is between 90˚ and 180˚ An acute angle is less than 90˚ The interior angles of a triangle add up to 180˚ Angles around a point add up to 180˚ There are 180˚ in a straight line An isosceles triangle has 3 equal sides and 3 equal angles. Each angle in an equilateral triangle measures 60˚ Intersecting lines are lines that never cross each other. Parallel lines are lines that cross each other. If you know all the angles that are in a triangle, you can draw the exact triangle. Parallel lines are marked with arrows. Equal lines are marked with dashes. Quadrilaterals have 4 sides. The interior angles of a quadrilateral add up to 180˚ A square is a regular quadrilateral. An obtuse angle is between 90˚ and 180˚ Right-angled triangles have two sides that are the same length. Triangles have at least one angle that is a reflex angle. True False Angles around a point add up to 360˚

P1 Reflect: What facts did you get wrong and what can you do to help you remember them from now on?

Find the missing angles using the rules. Task 2: Find the missing angles using the rules. 15o 27o a

Are you able to use angle rules to find missing angles? P2 Reflect: Are you able to use angle rules to find missing angles?