Upload
aleesha-booth
View
223
Download
2
Embed Size (px)
Citation preview
The sides of the angles
The vertex
BC
A
Side ABSide AC
(1) Name of the angle<BAC or < CAB or <A
(2) Vertex of the angleRemember that any angle have only one vertexAnd in this angle the vertex is A
(3) Sides of the angle
AB and ACAnd remember that the side all the time is ray
In any angle you must to know:
Types of Angle
Acute angles
1 2 3
Acute angles are angles less than 90o
Acute angles
Baby Acute Angle
This is baby Acute angle. Isn’t he cute?! He loves a hug,He’s the smallest of the family, measuring less than 90°.
90o on a protractor
Types of AngleRight angles
A right angle is an angle of 90o
1 2 3
Right angles
Mrs. Right Angle
This is me. I’m Mrs. Right Angle.I always measure 90°, my favourite shape is a square, my husband tells you, I’m always right!
Types of Angle
Obtuse angles
1 2 3
Obtuse angles are greater than 90o but less 180o
Obtuse angles
Mr. Obtuse AngleThis is Obtuse. He’s the husband of the family. He’s bigger than Right and Acute ., and he always measures between 90° and 180° (depending on how much dinner he’s eaten!)
Types of Angle
Straight angles
180o on a protractor180o on a
protractor
A straight angle is an angle of 180o
Straight angles
Acute Obtuse Acute
Right
Obtuse
Acute Obtuse
SummeryAcute angles
Less than 90 °
Right angles
All the time Equal 90 °
Obtuse angles
Greater 90 ° and less than
180 °
Straight angles
All the time equal 180 °