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In figure, if angleD=angleC, then it is ...

In figure, if `angleD=angleC`, then it is true that `DeltaADE~DeltaACB`? Why?

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True
In `DeltaADE and DeltaACB`
`angleA=angleA` [common angle]
`angleD=angleC`
`DeltaADE~DeltaACB` [by AAA similarity criterion]
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NCERT EXEMPLAR-TRIANGLES-Triangles
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  4. Is it true to say that, if in two triangles, an angle of one triangle ...

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  10. Find the altitude of an equilateral triangle of side 8 cm.

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  12. In figure, if DEabs()BC, then find the ratio of ar (DeltaADE) and ar(D...

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  13. ABCD is a trapezium in which ABabs()DC and P,Q are points on AD and BC...

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  14. Corresponding sides of two triangles are in the ratio 2\ :3 . If th...

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  15. In a Delta PQR, N is a point on PR, such that QNbotPR. If PNcdotNR=QN^...

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