Constructing a Trapezium When Its Two Sides and Two Angles Are Given
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Q. To construct a trapezium ABCD with AB∥CD, the following measurements are given:
AB = 5.5 cm, BC = 4.9 cm and ∠ABC=70∘.
Which other measure will help complete the construction?
AB = 5.5 cm, BC = 4.9 cm and ∠ABC=70∘.
Which other measure will help complete the construction?
- ∠DAB
- AE, the altitude from the point A onto CD.
- CM, the altitude from the point C onto AB.
- We need at least two more measures to uniquely construct this trapezium.
Q. To construct a trapezium ABCD with AB∥CD, AB = 6.5 cm, BC = 6.2 cm, ∠ABC=80∘ and ∠DAB=105∘, we follow the following steps:
1) Draw the line segment AB = 6.5 cm.
2) Construct the angle ∠ABX=80∘ at B.
3) With B as centre, draw an arc of radius 6.2 cm cutting BX at C.
4) Draw CD parallel to AB.
The next step involved in the construction is __.
1) Draw the line segment AB = 6.5 cm.
2) Construct the angle ∠ABX=80∘ at B.
3) With B as centre, draw an arc of radius 6.2 cm cutting BX at C.
4) Draw CD parallel to AB.
The next step involved in the construction is __.
- Construct the angle ∠BAZ=105∘ at A cutting CY at D.
- From the point A, draw an arc of radius 6.2 cm cutting CY.
- From the point A, draw an arc of radius 6.6 cm cutting CY.
- Construct the angle ∠BAZ=75∘ at A cutting CY at D.
Q. Construct a trapezium DEAN in which DE is parallel to NA, DE = 7 cm, EA = 6.5 cm, ∠ EDN = 100∘ and ∠ DEA = 70∘ . Also find its area.
Q. Question 202
Construct a trapezium RISK in which RI∥KS, RI = 7 cm, IS = 5 cm, RK = 6.5 cm and ∠I=60∘.
Construct a trapezium RISK in which RI∥KS, RI = 7 cm, IS = 5 cm, RK = 6.5 cm and ∠I=60∘.
Q. Question 203
Construct a trapezium ABCD, where AB∥CD, AD = BC = 3.2 cm, AB = 6.4 cm and CD = 9.6 cm. Measure ∠B and ∠A.
[Hint Difference of two parallel sides gives an equilateral triangle]
Construct a trapezium ABCD, where AB∥CD, AD = BC = 3.2 cm, AB = 6.4 cm and CD = 9.6 cm. Measure ∠B and ∠A.
[Hint Difference of two parallel sides gives an equilateral triangle]
Q. Construct a trapezium DEAN in which DE is parallel to NA, DE = 7 cm, EA = 6.5 cm, ∠ EDN = 100∘ and ∠ DEA = 70∘ . Also find its area.
Q. Question 186
Construct a trapezium ABCD in which AB∥DC, ∠A=105∘, AD = 3 cm, AB = 4 cm and CD = 8 cm.
Construct a trapezium ABCD in which AB∥DC, ∠A=105∘, AD = 3 cm, AB = 4 cm and CD = 8 cm.
Q. To construct a trapezium ABCD with AB∥CD, AB = 6.5 cm, BC = 6.2 cm, ∠ABC=80∘ and ∠DAB=105∘, we follow the following steps:
1) Draw the line segment AB = 6.5 cm.
2) Construct the angle ∠ABX=80∘ at B.
3) With B as centre, draw an arc of radius 6.2 cm cutting BX at C.
4) Draw CD parallel to AB.
The next step involved in the construction is __.
1) Draw the line segment AB = 6.5 cm.
2) Construct the angle ∠ABX=80∘ at B.
3) With B as centre, draw an arc of radius 6.2 cm cutting BX at C.
4) Draw CD parallel to AB.
The next step involved in the construction is __.
Q. The area of the trapezium PQRS is approximately:
- 5.25 cm2
- 4.2 cm2
- 8.4 cm2
- 5.75 cm2