Discover - Geometry Revision

Angles

100

Name the angle

Revolution Angle

200

Classify an angle that is 156^o

Obtuse

300

Draw the following angles as specified in the brackets.

400

State the type of angle that the minute hand of a clock makes when it moves for 10 minutes.

Acute

500

Which angle would be an obtuse angle? 

/KLN OR /MLP

Triangles

100

Name the triangle

Scalene or Obtuse Triangle

200

Which of these triangles is not a scalene triangle?

B

300

Classify this triangle by both sides and angles.

Acute-angled equilateral triangle

400

Select which of these triangles is both acute-angled and isosceles.

A

500

Find the unknowns.

a^o=60^o

c^o=120^o

Missing Angles

100

The angles in the interior of a triangle add up to?

180^o

200

Find the missing angle

b^o=87^o

300

Find the missing angle

a^o=38^o

400

Find the missing angle: 

k^o= 135^o

500

Find both of the missing angles: 

p^o=55^o

n^o=42^o

Quadrilaterals

100

Name 4 types of quadrilaterals 

Parallelogram
Rectangle
Square
Rhombus
Kite
Trapezium
Irregular Quadrilateral (Convex)
Concave Quadrilateral

200

Who am I? 

I have:
Opposite sides are equal in length.
Adjacent sides are perpendicular.
All angles are the same and equal 90^o.

Rectangle

300

Name the following quadrilateral, giving reasons for your answers.

Kite

2 pairs of adjacent sides
1 pair of opposite angles

400

Name the following quadrilateral, giving reasons for your answers.

Rhombus - All sides are equal in length. Opposite angles are equal in size.

500

Draw a convex quadrilateral and label the angles appropriately.

All sides should be pointing outwards.
Angles should add up to 360^o

QuadrilateralsMissing Angles

100

Find f^o

f^o=108^o

200

Find k^o

k^o=67

300

Find m^o

m^o=113^o

Remember that you have to minus what you can see from 360 and then divide by two to share between the two m's

400

Find n^o,m^o and p^o

n^o and m^o = 65^o each

p^o=115

500

Find J and K

j^o = 45^o

k^o = 135^o

Parallel and Perpendicular Lines

100

What letters to you use to identify the following angle pairs:

1. Co-Interior

2. Alternate

3. Corresponding

1. Co-Interior = C

2. Alternate = Z

3. Corresponding = F

200

Find the missing angle: 

20^o

300

Find the missing angle and explain why.

a^o=47^o because it is a vertically opposite angle.

400

Find the missing angle and explain the reasoning to your answer.

z^o= 112^o because it is an alternate angle

500

Find the unknown: 

x^o=43^o

x^o is not corresponding to 137^o. The angle beneath it is corresponding and then you would need to find x by doing 180 - 137 = 43

Geometry Random

100

A reflex angle is between:

180^o and 360^o

200

The acute angle in the following diagram is

ADB

300

Identify two pairs of vertically opposite angles. 

p and y

x and q 

v and s

r and w

400

Determine the value of the unknown

f=76^o

500

Determine the value of all of the unknowns