Bài giảng tiếng anh lớp 6

equal Bisector angle rays measurement a angle b rays c measurement d Bisector e equal An angle is a figure of two rays sharing an initial point Straight angle is the angle whose two sides are two opposite rays We compare two angles by comparing their measurement Bisector ray of an angle is the ray which is between two side of the angle and makes with two sides of the angle into two equal angle Base on the measurement of angle, How many type of angle? Figure Figure Figure Figure Acute angle Right angle Obtuse angle Straight angle Figure 1:∠xOy and ∠yOz Figure 2: ∠xOy and ∠tBz Figure 3: ∠xOy and ∠tAz Figure 4: ∠xOy and ∠yOz Adjacent angles supplementary angles Complementary angles Adjacent – supplementary angles Dịch: Cho hai góc kề bù Tính , Cho hai góc kề bù Tính Giải Vì hai góc kề bù nên: Vậy , solution Draw two adjacent-supplementary angles xOz, zOy Given that∠xOz = 50 a Calculate ∠zOy ? b Let Ot be the bisector ray of angle xOz Evaluate ∠yOt Thanks for your attention! Have a nice afternoon!