Angles… our.

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Presentation transcript:

Angles… our

Come and meet the Angle family... The Angles Come and meet the Angle family...

“Hi! We’re the Angles, we’re one family, but all very different, so let us tell you a bit about ourselves!”

Mr. Obtuse Angle This is Obtuse. He’s the husband of the family. He’s bigger than Right and Acute. He’s always inside, and he always measures between 90° and 180° (depending on how much dinner he’s eaten!)

Mrs. Right Angle This is me. I’m Mrs. Right Angle. I always measure 90°, my favourite shape is a square, and whatsmore, no matter what my husband tells you, I’m always right!

Baby Acute Angle This is baby Acute angle. Isn’t he cute?! He loves a hug, and always has his arms out for cuddles! He’s the smallest of the family, measuring less than 90°.

Reflex Angle This is our pet dog, Reflex. He’s always outside. He’s only a pup at the moment so he measures 180°, but he can grow up to 360 °! So he’s definitely the biggest angle. You’ll never see him without that ball in his mouth either, horrid thing!

Right on Right angles

Is this a right angle? Yes No

Have another look.

Is this a right angle? Yes

Does this shape have a right angle? Yes No

Have another look.

Does this shape have a right angle? Yes Does this shape have a right angle?

Compass Work

Anticlockwise rotations Using your Compass N Clockwise rotations and Anticlockwise rotations W E S

Naming Angles

Acute Angle Acute angles are less than 90o.

Right Angle Right angles are 90o

Obtuse Angle Obtuse angles are more than 90o but less than 180o.

Straight Angle Straight angles are180º.

Reflex Angle Reflex angles are more than 180o.

What type of angle is it?

L.O angles quiz ? obtuse acute reflex right

L.O angles quiz ? obtuse acute reflex right

L.O angles quiz ? obtuse acute reflex right

L.O angles quiz ? obtuse acute reflex right

L.O angles quiz ? obtuse acute reflex right

L.O angles quiz ? obtuse acute reflex right

L.O angles quiz ? obtuse acute reflex right

L.O angles quiz ? obtuse acute reflex right

What does it measure? This angle measures 35°.

Measuring, calculating and drawing angles... Our learning objectives today To use a protractor to: measure acute and obtuse angles to the nearest degree. draw acute and obtuse angles to the nearest degree. To calculate angles on a straight line.

Vocabulary Angle Clockwise 180º Right Angle Anti-Clockwise 90º Degrees Horizontal 270º Position Vertical 45º Direction Grid North Turn East Compass South Whole turn West 360º