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Yr 9 – Angles RevisionBlue

Red

Green

Orange

GreyYellow

Question One

Name 3 acute angles in this picture.

Answer

Ans: ےBAG, CBD, EFD, DEF, BFG, BCE

A

G FE

D

B C

^ ^ ^ ^ ^ ^

Question TwoAnswer

Ans: Square based pyramid

What is the mathematical name of this famous 3 Dimensional Structure?

Question ThreeAnswer

Ans: 315º

What is the bearing for the compass direction NW?

0

0

?

Question FourAnswer

Ans: 42º (Vertically opposite angles are equal)

What is the

missing angle, x? State the angle property you used?

42º

x123º

Question FiveAnswer

Ans: 48º (Angles on a line add to 180º)

42º

y

123º

What is the missing

angle, y?Give the angle property you used to make the calculation.

Question SixAnswer

Ans: Complementary

Are 42º and 48º complementary or supplementary angles?

Question SevenAnswer

It’s a Race!

All groups! Organise a bunch of different angles according to their type.

Question EightAnswer

Ans: 24º

102º

XWhat is the missing angle, x ?

Question NineAnswer

Ans: x = y = z = 60º (equilateral triangle)

What are the missing angles and what type of triangle is this ?x

y

z

Question TenAnswer

Ans: 180º

Angles add to _______?

Question ElevenAnswer

Ans: 1.) Scalene 2.) Right-angled 3.) Isoceles

2

1

3

Correctly identify all 3 of the triangles shown

Questions TwelveAnswer

Ans: Triangular Prism

What is the name of this 3 Dimensional Shape?

Question ThirteenAnswer

Ans: 230º

What is the best estimate for the bearing from X to Y?

N

x

y045º, 230º, 280º or 175º

Questions FourteenAnswer

Ans: x = 65º (Parallelogram)

65º

Name this quadrilateral. What is the missing angle, x?x

Question FifteenAnswer

Ans: 258º (Sum of angles at a pt add to 360º)

x

12 ºWhat is the missing angle, x?

State the angle property you used to make the calculation.

Question SixteenAnswer

Ans: 6 Faces, 12 Edges, 8 Vertices

How many:

Faces_______Edges_______Vertices_____

Question SeventeenAnswer

Ans: Cylinder

Name this 3 Dimensional Shape

Question EighteenAnswer

Ans: 070º

What is the best estimate for the bearing from A to B?

N

A

B

135º, 045º, 070º, or 255º

Question NineteenAnswer

Ans: ےABC, obtuse, vertex at B

A

CB

What is the name and type of this angle?

Which point is the vertex?

^

Question TwentyAnswer

Ans: Isoceles Trapezium, 360º

Name this shape.

What is the sum of all the interior angles of this quadrilateral?