cho tam giác ABC cân tại A,đường cao AD. O là trung điểm AC. D đối xứng với E qua O. Chứng minh AECD là hình chữ nhật

If lmn=xyz, which congruences are true by cpctc? check all that apply

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

What is the measure of one interior angle of a pentagon