FEATURES OF TRIANGLES
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Transcript of FEATURES OF TRIANGLES
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How many sides have a triangle?
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3
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What is formulae for finding the area of a triangle?
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A=1/2bh
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How many sides have a rectangle?
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4
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What is formulae for finding the area of a triangle?
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A=lb
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A B
CD F
E
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What is the area of rectangle ABCD?
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A =AB*AD
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What is the area of triangle ABF?
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A =1/2 AB*FE
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What is relation between FE and AD?
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AD=FE
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What is the relation between area of triangle ABF and area of rectangle ABCD?
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Area of ABCD=1/2 Area of ABF
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Area of the rectangle is double, the area of triangle obtained by the two vertices on the side of rectangle and third vertex is on the opposite side.
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A B
CD
F
P
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What is the area of rectangle ABCD?
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A=AB*AD
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What is the area of triangle ABF?
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A=1/2 AB*PF
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What is the relation between AD and PF?
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AD = PF
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What is the relation between area of triangle ABF and area of rectangle ABCD?
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Area of ABCD=1/2Area of ABF
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Area of a rectangle is double, the area of a triangle obtained by the two vertices on side of the rectangle and third vertex is on the extended opposite side.
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A BC D F G
Q R SP
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What is the area of triangle ABP?
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A=1/2 AB*PC
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What is the area of triangle ABQ?
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A=1/2 AB*QD
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What is the area of triangle ABR?
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A=1/2 AB*RF
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What is the area of triangle ABS?
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A=1/2 AB*SG
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What is the relation between PC,QD,RF and SG?
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These sides are equal.
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What is the relation between area of triangle ABP,ABQ,ABR,and ABS?
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These are equal.
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Triangles with the same base and between the same
parallels are of equal area
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Can you draw a triangle with same area as the triangle ABC shown below but with the angle at A, a right angle?
A
C
B
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The area of the triangle between same parallel lines and have same base are ----------
Find the vertices of the triangle that have half of the area of a rectangle?
The distance between parallel line are ------- every time
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AB=5cm, BC=7cm, angle ABC=60. Draw the triangle ABC. Draw another triangle with same area.
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AB= 4cm, BC= 5cm, CA= 6cm. Draw the triangle ABC. Draw an isosceles triangle with same area as ABC.
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