# Yr 9 – Angles Revision Blue Green Red Orange Yellow Grey.

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Yr 9 – Angles Revision Blue Green Red Orange Yellow Grey

Name 3 acute angles in this picture.
Question One Answer A B C Name 3 acute angles in this picture. D E G F ^ ^ ^ ^ ^ ^ Ans: ﮮBAG, CBD, EFD, DEF, BFG, BCE

Question Two Answer What is the mathematical name of this famous 3 Dimensional Structure? Ans: Square based pyramid

Question Three What is the bearing for the compass direction NW?
Answer ? What is the bearing for the compass direction NW? Ans: 315º

Question Four Answer 42º x 123º What is the missing angle, x? State the angle property you used? Ans: 42º (Vertically opposite angles are equal)

Question Five y What is the missing angle, y?
Answer What is the missing angle, y? Give the angle property you used to make the calculation. y 42º 123º Ans: 48º (Angles on a line add to 180º)

Question Six Answer C S Are 42º and 48º complementary or supplementary angles? Ans: Complementary

Question Seven It’s a Race!
Answer It’s a Race! All groups! Organise a bunch of different angles according to their type. First team who finishes correctly, wins. Use 6 Pack of laminated ‘Angles and type’ in Ziplock bags

Question Eight Answer X What is the missing angle, x ? 102º Ans: 24º

Question Nine Answer y What are the missing angles and what type of triangle is this ? x z Ans: x = y = z = 60º (equilateral triangle)

Question Eleven Correctly identify all 3 of the triangles shown 2 3 1
Answer 1 Correctly identify all 3 of the triangles shown 2 3 Ans: 1.) Scalene 2.) Right-angled 3.) Isoceles

Questions Twelve What is the name of this 3 Dimensional Shape? Answer
Ans: Triangular Prism

Question Thirteen Answer N What is the best estimate for the bearing from X to Y? x 045º, 230º, 280º or 175º y Ans: 230º

Questions Fourteen Answer Name this quadrilateral. What is the missing angle, x? x 65º Ans: x = 65º (Parallelogram)

Question Fifteen x What is the missing angle, x?
Answer What is the missing angle, x? State the angle property you used to make the calculation. 12 º x Ans: 258º (Sum of angles at a pt add to 360º)

Question Sixteen How many: Faces_______ Edges_______ Vertices_____
Answer How many: Faces_______ Edges_______ Vertices_____ Ans: 6 Faces, 12 Edges, 8 Vertices

Question Seventeen Answer Name this 3 Dimensional Shape Ans: Cylinder

Question Eighteen Answer N What is the best estimate for the bearing from A to B? B A 135º, 045º, 070º, or 255º Ans: 070º

Question Nineteen What is the name and type of this angle?
Answer A What is the name and type of this angle? Which point is the vertex? C B ^ Ans: ﮮABC, obtuse, vertex at B

Question Twenty Name this shape.
Answer Name this shape. What is the sum of all the interior angles of this quadrilateral? Ans: Isoceles Trapezium, 360º

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