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ΔAMT ~ ΔAHE. In ΔAMT, AM = 6.3 cm, ∠MAT = 120°, AT = 4.9 cm, `(AM)/(HA) = 7/5`, then construct ΔAMT and ΔAHE.
Concept: undefined >> undefined
ΔRHP ~ ΔNED, In ΔNED, NE = 7 cm. ∠D = 30°, ∠N = 20°, `(HP)/(ED) = 4/5`, then construct ΔRHP and ∆NED.
Concept: undefined >> undefined
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ΔABC ~ ΔPBR, BC = 8 cm, AC = 10 cm, ∠B = 90°, `(BC)/(BR) = 5/4` then construct ∆ABC and ΔPBR.
Concept: undefined >> undefined
The distance between point P(2, 2) and Q(5, x) is 5 cm, then the value of x = ______.
Concept: undefined >> undefined
The distance between points P(–1, 1) and Q(5, –7) is ______.
Concept: undefined >> undefined
If the length of the segment joining point L(x, 7) and point M(1, 15) is 10 cm, then the value of x is ______.
Concept: undefined >> undefined
Find distance between point A(–3, 4) and origin O.
Concept: undefined >> undefined
Find distance between point A(7, 5) and B(2, 5).
Concept: undefined >> undefined
Find distance of point A(6, 8) from origin.
Concept: undefined >> undefined
Find distance between points O(0, 0) and B(–5, 12).
Concept: undefined >> undefined
Find distance between point Q(3, –7) and point R(3, 3)
Solution: Suppose Q(x1, y1) and point R(x2, y2)
x1 = 3, y1 = –7 and x2 = 3, y2 = 3
Using distance formula,
d(Q, R) = `sqrt(square)`
∴ d(Q, R) = `sqrt(square - 100)`
∴ d(Q, R) = `sqrt(square)`
∴ d(Q, R) = `square`
Concept: undefined >> undefined
Find distance between point A(–1, 1) and point B(5, –7):
Solution: Suppose A(x1, y1) and B(x2, y2)
x1 = –1, y1 = 1 and x2 = 5, y2 = –7
Using distance formula,
d(A, B) = `sqrt((x_2 - x_1)^2 + (y_2 - y_1)^2`
∴ d(A, B) = `sqrt(square +[(-7) + square]^2`
∴ d(A, B) = `sqrt(square)`
∴ d(A, B) = `square`
Concept: undefined >> undefined
If the distance between point L(x, 7) and point M(1, 15) is 10, then find the value of x.
Concept: undefined >> undefined
Find distance CD where C(–3a, a), D(a, –2a).
Concept: undefined >> undefined
Show that the point (11, –2) is equidistant from (4, –3) and (6, 3).
Concept: undefined >> undefined
If the point P(6, 7) divides the segment joining A(8, 9) and B(1, 2) in some ratio, find that ratio.
Solution:
Point P divides segment AB in the ratio m : n.
A(8, 9) = (x1, y1), B(1, 2) = (x2, y2) and P(6, 7) = (x, y)
Using Section formula of internal division,
∴ `7 = (m(square) - n(9))/(m + n)`
∴ 7m + 7n = `square` + 9n
∴ 7m – `square` = 9n – `square`
∴ `square` = 2n
∴ `m/n = square`
Concept: undefined >> undefined
Show that P(–2, 2), Q(2, 2) and R(2, 7) are vertices of a right angled triangle.
Concept: undefined >> undefined
Show that the point (0, 9) is equidistant from the points (–4, 1) and (4, 1).
Concept: undefined >> undefined
Show that the points (0, –1), (8, 3), (6, 7) and (–2, 3) are vertices of a rectangle.
Concept: undefined >> undefined
Show that the points (2, 0), (–2, 0) and (0, 2) are vertices of a triangle. State the type of triangle with reason.
Concept: undefined >> undefined
