3D Pythagoras & Trigonometry (Edexcel IGCSE Maths A (Modular): Higher Unit 1): Exam Questions

is an isosceles triangle in a horizontal plane. The point is vertically above .

Angle


is the midpoint of .

Calculate the size of the angle between and the horizontal plane .
Give your answer correct to one decimal place.

The diagram shows a triangular prism with a horizontal base .

Calculate the size of the angle between and the base .
Give your answer correct to 3 significant figures.

The diagram shows a prism  with a horizontal base.

The base of the prism, , is a square of side  Trapezium  is a cross section of the prism where  and  are vertical edges.

Work out the size of the angle between  and the base 
Give your answer correct to one decimal place.

Work out the length of 
Give your answer correct to one decimal place.

.............................................. cm 

 is a triangular prism which represents part of a hill.

 is the horizontal rectangular base.
is vertically above .

Work out the height .

..........................m

Jamil walks in a straight line from  to .

Work out the size of angle .
You must show your working.

........................degrees

Rectangle is the horizontal base of a triangular prism

is vertically above M, the midpoint of .

cm    cm    cm

Show that cm

Work out the size of angle

...........................degrees 

The diagram shows a cuboid ABCDEFGH.

Calculate angle BHF.

The diagram shows a right-angled triangular prism ABCDEF.

Calculate angle AFB.

The diagram shows the prism  with cross section triangle .

Angle = 40° and angle is obtuse. = 6 cm and = 13cm

The area of triangle is 22 

Calculate the length of .
Give your answer correct to one decimal place.

..................

The diagram shows a solid prism .

The trapezium , in which is parallel to , is a cross section of the prism.
The base of the prism is a horizontal plane. and are rectangles.
The midpoint of is vertically above the midpoint of so that .

The perpendicular distance between edges and is 20 .

Calculate the size of the angle between and the plane .
Give your answer correct to one decimal place.

The diagram shows the prism with horizontal base

is a cross section of the prism where

is a square
is an equilateral triangle

 
is the midpoint of so that is vertical.

Angle
Given that           
find the value of, giving your answer in the form  where and are integers.

= ........................... 

Alvin has a crate in the shape of a cuboid.
The crate is open at the top.
The internal dimensions of the crate are 46cm long by 46cm wide by 55cm high.

Alvin has a stick of length 95cm.
Alvin places the stick in the crate so that the shortest possible length extends out above the top of the crate.

Calculate the length of the stick that extends out of the crate.

..................................................... cm

Calculate the angle the stick makes with the base of the crate.

The diagram shows a pyramid with a square base ABCD of side length 8cm.
The diagonals of the square, AC and BD, intersect at M.
V is vertically above M and VM = 10 cm.

Calculate the angle between VA and the base.

The diagram shows a prism with a rectangular base, ABFE.
The cross-section, ABCD, is a trapezium with AD = BC. AB = 8 cm, GH = 5 cm, BF = 12 cm and angle ABC = 70°.

The perpendicular from G onto EF meets EF at X. 

i) Show that EX = 6.5 cm.

[1]

ii) Calculate AX.

  AX = ........................................... cm [2]

iii) Calculate the angle between the diagonal AG and the base ABFE.

[2]

ABCDEFGH is a cuboid. AB = 8 cm, BC = 5 cm and CG = 11 cm.

Ivana has a pencil of length 13cm.

Does this pencil fit completely inside the cuboid? Show how you decide.

The diagram shows a pyramid with a square base ABCD. DB = 8 cm.
P is vertically above the centre, X, of the base and PX = 5 cm.

Calculate the angle between PB and the base ABCD.