Grade 5 - Mathematics - Angles and Triangles

In the figure below, AF, BD and CE are straight lines.

∠AFE= 43^o. ∠AFB is a right angle.

Find ∠^oCFD.

• 141^o

• 137^o

• 133^o

• 129^o

Joanne had a piece of rectangular paper and folded it along the dotted line as shown below.

Find ∠y

• 117^o

• 126^o

• 144^o

• 153^o

ABC is a straight line. ∠ABD is 149^o and ∠EBC is 118^o.

Find ∠EBD.

In the figure, not drawn to scale, ABC is a right-anglled triangle and ABD is an isosceles triangle.

∠CBD = 30^o and ∠ACB = 40^o.

Find ∠CAD.

ABC is an isosceles triangle. Find ∠x.

JL and KM are straight lines.

Which of the following statements is true?

• ∠s = ∠t

• ∠s + ∠t = 90^o

• ∠s + ∠u = 180^o

• ∠t + ∠u = 180^o

CED and GEH are straight lines. ∠CEH = 155^o, ∠GEF = 90^o.

Find angle CEF.

ABC is an equilateral triangle and ∠CDE = 56^o.

Find ∠ACD.

Line AOB and line COD are straight lines.

∠AOE = 14^o and ∠BOD = 30^o.

Find ∠x

In the figure below, all the lines meet at point O.

∠LOP = 215^o. Find ∠MOP.