Question

In trapezium ABCD, AB//CD, <A=100°, <B=70.....find the measure of remaining angles





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Answer 1

Answer:

Step-by-step explanation:

∴angle c = 180 - 100 = 80

angle d = 180 - 70 = 110

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Answer 2

Answer:

Step-by-step explanation:

<a = 100

A _____________. C

/ /

/ /

/_____________/

B. D

AB || CD

So corresponding angle of A is 100 which is supplementary to <ABD

SO <ABD =180 - 100 =80

SIMILARITY CORRESPONDING < of ABD = 80 WHICH IS SUPPLEMENTARY TO ANGLE BDC

So <BDC =180 - 80 = 100

OR can directly state since AB || CD SO BY ALTERNATE INTERIOR ANGLES ARE EQUAL