A,B,C,D are four angles of a rectangle prove that angle A = angle C.
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All angles of a rectangle are equal to 90°
So,
A=B=C=D=90°
Therefore,angle A=angle C
So,
A=B=C=D=90°
Therefore,angle A=angle C
Murugan11:
i ashed proof
Sum of all interior angles of a rectangle=360°.....Since all angles are equal ......SO ANGLE A =ANGLE B
Answered by
1
let we draw a diagonal ac by joining a and c.
then we got 2 triangles ABC and ADC .
In which we name those angles formed by them i.e BAC,DAC,DCA,BCA.
NAME IS 1,2,3,4
and hence, 1=3 (alternative angl eproperty)..........................1
2=4(same).............................................................................2
from this we get by adding 1 and 2 is;
(angle)BAD=(angle)BCD
then we got 2 triangles ABC and ADC .
In which we name those angles formed by them i.e BAC,DAC,DCA,BCA.
NAME IS 1,2,3,4
and hence, 1=3 (alternative angl eproperty)..........................1
2=4(same).............................................................................2
from this we get by adding 1 and 2 is;
(angle)BAD=(angle)BCD
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