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प्रश्न
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.
उत्तर
ABCDEFGH is a regular octagon and CDGH is a rectangle formed by joining C and H; D and G.
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संबंधित प्रश्न
Construct traingle ABC, when : AB = 6 cm, BC = 8 cm and AC = 4 cm.
Construct traingle ABC, when : AB = 3.5 cm, AC = 4.8 cm and BC = 5.2 cm.
Construct traingle ABC, when : AB = 5.4 cm, ∠A = 30° and ∠B = 90°. Measure ∠C and side BC.
Name the type of following triangle :
∆DEF with m∠D = 90°
Name the type of following triangle :
ΔLMN with m∠L = 30°, m∠M = 70° and m∠N = 80°
Match the following:
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Measures of Triangle |
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Type of Triangle |
| (i) | 3 sides of equal length | (a) | Scalene |
| (ii) | 2 sides of equal length | (b) | Isosceles right angled |
| (iii) | All sides are of different length | (c) | Obtuse angled |
| (iv) | 3 acute angles | (d) | Right angled |
| (v) | 1 right angle | (e) | Equilateral |
| (vi) | 1 obtuse angle | (f) | Acute angled |
|
(vii) |
1 right angle with two sides of equal length |
(g) | Isosceles |
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)
Name the following triangle in two different ways: (you may judge the nature of the angle by observation)
Try to construct triangles using match sticks. Some are shown here.
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Can you make a triangle with 6 matchsticks?
(Remember you have to use all the available matchsticks in each case) Name the type of triangle in each case. If you cannot make a triangle, think of reasons for it.
