Question

draw the two quadrilaterals shown below. draw trianes of the area and calculate the areas
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Answer 1

Draw a triangle of sides 3,4 and 6 centimeters. Draw three different right triangles of the same area.

Answer:

Draw ∆ ABC having sides 3 cm, 4 cm, and 6 cm.

9th Standard Maths Notes Kerala Syllabus

Draw a line parallel to AB through C and a line from B perpendicular to the parallel line, both lines intersect at point E. Now ∆ABE is a right angled triangle. Also draw a line perpendicular to the parallel line through A, which makes a point Don parallel line, join BD. ∆ ABD is a right angled triangle.

Kerala Syllabus 9th Standard Maths Solution Chapter 1 Area In English

Similarly make right-angled triangle by drawing line parallel to AC through B, and a line from A perpendicular to the parallel line, both lines intersect at point F.

Maths 9th Class Chapter 1 Area English Medium Kerala Syllabus

The right traingle ∆ DAB, ∆ ABE, ∆ CAF have the same area as that of ∆ ABC.

Kerala Syllabus 9th Standard Maths Solution Chapter 1 Area In English Question 2.

Draw the triangle shown below in your notebook. Draw triangles ABP, BCQ and CAR of the same area with measurements given below.

9th Standard Maths Notes Malayalam Medium Kerala Syllabus

∠BAP = 90°

∠BCQ = 60°

∠ACR = 30°

Answer:

1.

Draw A Square Of Area 10 Square Centimeters Malayalam

Draw a line parallel to AB through C. Draw a perpendicular from A and the point of intersection of perpen-dicular and parallel line is P. Then draw ∆ABP then ∠BAP = 90°. Areas of ∆ABC and ∆ABP are equal.

2.

Kerala Syllabus 9th Standard Notes Maths

Draw a line parallel to BC through A from C make angle 60° both lines intersect at point Q. Then draw ∆ BCQ. Areas of ∆ ABC and ∆ BCQ are equal.

3.

Maths Notes Class 9 Kerala Syllabus

Draw a line parallel to AC through B from C make angle 30° both lines intersect at point R. Then draw ∆ACR. Areas of ∆ABC and ∆ ACR are equal.