Advertisements
Advertisements
Question
Construct traingle ABC, when : AB = BC = CA = 4.5 cm. Measure all the angles of the triangle. Are they equal?
Solution
Steps of Construction:
(1) Draw a line AB = 4.5 cm.
(2) Using compasses and taking BC as centre, draw an arc of 4.5 cm radius.
(3) With AC as centre, draw an arc of 4-5 cm radius, which cuts the previous arc at C.
(4) Join AC and BC.
(5) Measurement, ∠A = ∠B = ∠C = 60°.
APPEARS IN
RELATED QUESTIONS
Construct traingle ABC, when : AB = 3 cm, BC = 7 cm and ∠B = 90°.
Construct traingle ABC, when : AC = 6 cm, ∠A = 60“ and ∠C = 45°. Measure AB and BC.
Construct traingle ABC, when : AB = 5.4 cm, ∠A = 30° and ∠B = 90°. Measure ∠C and side BC.
One angle of a triangle is 80° and the other two are in the ratio 3 : 2. Find the unknown angles of the triangle
Observe the figure below and write the type of the triangle based on its angles.
Δ LMN is ... triangle
Observe the figure below and write the type of the triangle based on its sides.
Δ ABC is ... triangle
Name the following triangle in two different ways: (you may judge the nature of the angle by observation)
Name the following triangle in two different ways: (you may judge the nature of the angle by observation)
Draw a rough sketch of a regular hexagon. Connecting any three of its vertices, draw a triangle. Identify the type of the triangle you have drawn.
Draw a rough sketch of a regular octagon. (Use squared paper if you wish). Draw a rectangle by joining exactly four of the vertices of the octagon.