China Naming Network - Auspicious day query - The math proof problem in the second day of junior high school (with pictures) is urgent! ! !
The math proof problem in the second day of junior high school (with pictures) is urgent! ! !
Cross d stands for DE⊥MN, and AB stands for E.
∫MN//BC
∴∠DAE=∠ABC=45
∴∠AED=45
∴∠BED= 135 =∠PAD
And AD=ED.
And ∠DBE=∠DPA.
According to the number 8
∴△DBE≌△DPA(AAS)
∴BD=PD