#### Topics

1. Construct a triangle ABC when

AB = 6.0 cm,BC = 8.0 cm and AC = 7.5 cm(ie,if three sides are given)

1. Draw AB = 6 cm

2. With A as centre and radius = 7.5 cm,draw an arc

3. With B as centre and radius = 8 cm,draw one more arc,which cuts the former arc at C.

4. Join AC and BC.ABC is the required triangle. 2. Construct a triangle PQR,when QR = 3.6 cm,RP = 3 cm and R = 45o

(ie,if lengths of two of its sides and the included angle are given)

Step 1: Draw QR = 3.6 cm

Step 2: Draw RS,making angle 45o with QR.ie QRP = 45o

Step 3: From RS,cut RP = 3 cm.

Step 4: Join Q and P.PQR is the required traingle. 3. Construct an isosceles traingle ABC when base BC = 6.8 cm and A = 90o.

Since ABC is isosceles and A = 90o, B = C = 45o,since base angles are equal. Step 1: Draw BC = 6.8 cm

Step 2: Since base angles are equal, B = C = 45o,Draw BP making PBC = 45o

Step 3: Draw CQ making BCQ = 45o

Step 4: BP and CQ meeting at A,ABC is the required triangle.

4. Construct an equilateral triangle ABC in which AB = 6 cm.

Each angle of an equilateral traingle is 60o.

Step 1: Draw a line AB = 6 cm

Step 2: With A as centre draw AP with PAB = 60o

Step 3: With B as centre draw BQ with ABQ = 60o

Step 4: AP and BQ intersect at C.

ABC is the required triangle Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only!
Paid Users Only! 