Question

traingle LMN is right angled triangle at angle M is 90 and LM = NM. Find angle L and angle N.​

Answer 1

Answer:

Angles L and N is 45 degree

Step-by-step explanation:

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Answer 2

Answer:

LM=9cm

MN=12cm

LN=15cm

∴PM=4.5cm

QN=7.5cm

And we know that the line joining the mid points of the two sides of a triangle is parallel to the third side and is equal to half of it.

∴PQ=

2

1

MN=6cm

(i)Perimeter of trapezium MNQP=(4.5+7.5+12+6)

=24+6

=30cm

(ii)Area of trapezium=

2

1

×(sum of parallel sides)× (height)

=

2

1

×(12+6)×4.5

=9×4.5

=40.5cm