Constructions of Triangles

IMPORTANT

Constructions of Triangles: Overview

This Topic covers sub-topics such as Construction of a Triangle using Ruler and Compass, Construction of Triangle Equal to Area of Given Convex Quadrilateral and, Construction of a Triangle, Given its Perimeter and its Two Base Angles

Important Questions on Constructions of Triangles

HARD
IMPORTANT

Construct a triangle PQR in which QR=6 cm, Q+R=90°, Q-R=30°, and PR-PQ=2 cm.

HARD
IMPORTANT

Construct a triangle ABC in which AB-AC=3.1 cm, BC=8 cm, B+C=75° and B-C=15°.

HARD
IMPORTANT

Construct RTS given that S=85°,RS=4.5 cm, R-S=5° and RT+TS=6.3 cm

HARD
IMPORTANT

Construct a triangle ABC in which AB+AC=13 cm, BC=7 cm, A=75° and B-C=30°.

MEDIUM
IMPORTANT

Draw a regular pentagon of each side 6 cm and then a triangle of the same area. 

MEDIUM
IMPORTANT

Draw a rhombus of side 7 cm and one angle 60 degree,then draw a right angle of the same area.

MEDIUM
IMPORTANT

Construct a triangle ABC in which base BC = 6 cm, ABC = 60° and AB - AC= 2 cm.

MEDIUM
IMPORTANT

Construct a triangle ABC in which BC = 6 cm, AB + AC = 8 cm and ABC = 60°.

MEDIUM
IMPORTANT

Draw a regular pentagon and then a triangle of the same area. 

MEDIUM
IMPORTANT

Draw a rhombus of sides 6cm and one angle 60 degree,then draw a right angle of the same area

MEDIUM
IMPORTANT

Construct a triangle ABC in which base BC = 5 cm, ABC = 60° and AB - AC= 1.7 cm.

MEDIUM
IMPORTANT

Construct a triangle ABC in which BC = 5 cm, AB + AC = 8.5 cm and ABC = 60°.

EASY
IMPORTANT

Construct a triangle whose one of the base angle is 60° with base length 5 cm and the sum of other two sides is 7 cm.

EASY
IMPORTANT

Construct a triangle with base 5.5 cm, one of the base angle of value 60° and the sum of other two sides 8 cm.
 

HARD
IMPORTANT

Write the steps for the construction of PQR, in which PQ-PR=2.4 cm, QR=6.4 cm and PQR=55°.

HARD
IMPORTANT

The measure of each side of an equilateral triangle constructed, if each of its altitude measures 5.4 cm is

HARD
IMPORTANT

Write the steps of the construction of  XYZ in which Y=30°, Z=90° and XY+YZ+ZX=11 cm.

HARD
IMPORTANT

Write the steps for the construction of a triangle ABC, in which BC=5.2 cm, C=45° and perimeter of ABC is 10 cm?

HARD
IMPORTANT

Write steps of construction of an equilateral triangle of each side 3 cm.

EASY
IMPORTANT

 An obtuse triangle can be drawn only when the obtuse angle is given.