Calculate missing angles in a quadrilateral While you

Getting Started… What do we know about each angle in a rectangle? What does

Chunk 1 1) Draw an angle arc on each angle. 2) Rip off each

What did you find? What does this tell us about the angles in a

Chunk 1: Your Turn Stick your angles to form a full circle in your

Chunk 2 360º a a b b 120º What do you notice about the

Chunk 2: Your Turn c d CHOOSE IT! Choose your own way of showing

Chunk 2: Answers d c a=125° b=125° c=35° d=163° CHOOSE IT! Choose your own

Chunk 3 What could you do to prove that Adam is wrong?

Chunk 3: Your Turn Are these statements true or false? Prove it. a) You

Plenary What was easier doing Home Learning? What was more tricky?

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Calculate missing angles in a quadrilateral While you wait… What quadrilaterals can you see?

Getting Started… What do we know about each angle in a rectangle? What does this tell us about the total of the angles? What does the oblong become when it is tilted? What does the square become when it is tilted? What does this tell us about the angles in a parallelogram and a rhombus?

Chunk 1 1) Draw an angle arc on each angle. 2) Rip off each angle. 3) Arrange each angle next to each other.

What did you find? What does this tell us about the angles in a quadrilateral? Does the type of quadrilateral make a difference? Does the size of quadrilateral make a difference?

Chunk 1: Your Turn Stick your angles to form a full circle in your book. Write a statement to summarise what you found out. AND ANOTHER… Prove that the angles add up to the same total with another type of quadrilateral. And another…

Chunk 2 360º a a b b 120º What do you notice about the angles? If I gave the size of 1 angle, could you calculate the size of the other angles?

Chunk 2: Your Turn c d CHOOSE IT! Choose your own way of showing a deeper understanding.

Chunk 2: Answers d c a=125° b=125° c=35° d=163° CHOOSE IT! Choose your own way of showing a deeper understanding.

Chunk 3 What could you do to prove that Adam is wrong?

Chunk 3: Your Turn Are these statements true or false? Prove it. a) You can never have 4 acute angles in a quadrilateral. b) A quadrilateral can’t have 3 obtuse angles. c) A quadrilateral must have 2 pairs of equal angles. CHOOSE IT! Choose your own way of showing a deeper understanding.

Chunk 3: Your Turn Are these statements true or false? Prove it. a) You can never have 4 acute angles in a quadrilateral. TRUE b) A quadrilateral can’t have 3 obtuse angles. FALSE c) A quadrilateral must have 2 pairs of equal angles. FALSE CHOOSE IT! Choose your own way of showing a deeper understanding.

Plenary What was easier doing Home Learning? What was more tricky?