thasmin88p7f4v8 thasmin88p7f4v8

12-08-2020
Mathematics

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in the diagram, find the values of a and b.

in the diagram find the values of a and b class=

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unicorn3125 unicorn3125

12-08-2020

Answer:

m∠a = 67° , m∠b = 42°

Step-by-step explanation:

∠a is alternate interior angle to ∠ECD

∠b is alternate interior angle to ∠BCD

so:

If AB || CD then:

m∠a = m∠ECD = 25° + 42° = 67°

m∠b = 42°

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