Before doing construction, draw a rough sketch, so that you will get an idea which side is taken as a base.Here after drawing a rough sketch, we are sure that the base is AB = 4.8 cm.

Step 1 : Draw AB = 4.8 cm.

Step 2 : Using protractor, draw ∠ABK = 70

Step 3 : On the line segment BK, cut off BC = 5.2 cm.

Step 4 : Join A and C.

ΔABC is the required triangle.

_________________________________________________________________________

Before doing construction, draw a rough sketch, so that you will get an idea which side is taken as a base.Here after drawing a rough sketch, we are sure that the base is AB = 4.8 cm.

Step 1 : Draw PR = 5 cm.

Step 2 : Using protractor, draw ∠QPM = 110

Step 3 : On the line segment PM, cut off PQ = 5 cm.

Step 4 : Join Q and R.

ΔPQR is the required triangle.

_______________________________________________________________________

1) In a triangle ABC if AB = 3 cm , AC = 5 cm and ∠B = 30°. Can we draw this triangle uniquely ?

2) Can we Construct ΔABC such that AB = AC = 5cm and ∠A = 60°?

3) Construct a ABC, in which ∠B = 70, AB = 4.8 cm and BC = 5.2 cm.

4) Construct a PQR, in which ∠Q = 135, PQ = 5.2 cm and QR = 6 cm .

5) In a triangle ABC if AB = 3 cm , AC = 5 cm and ∠B = 30°. Can we draw this triangle uniquely ?

• Basic Geometric Constructions

• Construction of Line Segment

• Bisecting a Line Segment

• Constructing Angles

• Bisecting Angles

• Constructing Parallel Lines

• Construction of Triangle (SSS)

• SAS Triangle Construction

• ASA Triangle Construction

• HL Triangle Construction (Rhs -construction)

• Constructing Quadrilaterals

• Constructing Triangles(when sum of sides or perimeter is given)

7th grade math

Home Page

GMAT

GRE

1st Grade

2nd Grade

3rd Grade

4th Grade

5th Grade

6th Grade

7th grade math

8th grade math

9th grade math

10th grade math

11th grade math

12th grade math

Precalculus

Worksheets

Chapter wise Test

MCQ's

Math Dictionary

Graph Dictionary

Multiplicative tables

Math Teasers

NTSE

Chinese Numbers

CBSE Sample Papers