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Maths CBSE Live product
Class 7 (2025-26)
A Tale of Three Intersecting lines
PT3 Revision II - A Tale of three intersecting lines
12.
Write the construction for the given geometry
Question:
5
m.
Construct triangles for the following measurements:
\(45°, 4.5 \ cm, 75°\)
Geometry:
Construction:
Step - 1:
Draw a base line segment BC = 4.5 cm.
Draw a base line segment AB = 4.5 cm.
Draw an altitute AB = 4.5 cm.
Step - 2:
Place the protractor at B and construct ∠ B = 45° by drawing the other arm of the angle.
Place the protractor at A and construct ∠A = 75° by drawing the other arm of the angle.
Place the protractor at A and construct ∠A = 45° by drawing the other arm of the angle.
Step - 3:
Place the protractor at B and construct ∠ B = 45° by drawing the other arm of the angle.
Place the protractor at B and construct ∠ B = 75° by drawing the other arm of the angle.
Place the protractor at A and construct ∠A = 45° by drawing the other arm of the angle.
Step - 4:
Mark the intersecting point of the two arms as the vertex C.
Mark the intersecting point of the two arms as the vertex A.
Mark the intersecting point of the two arms as the vertex B.
Thus, \(ABC\)
is the required triangle
.
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