Angles
∠AB=4 units and ∠BC=8 units and ∠AC=?
what is the unit of ∠AC?
∠AC=12 units
20x30=
600
50/25
2
300-200=
100
(8)2+(7)2
113
∠1 + ∠2 + ∠3 = 90°. Given, ∠2 = 30° and ∠3 = 40°.
∠1 = 20°
30x40=
1200
100/4
25
400-250=
150
(9+3)2+(8)
152
∠ABD + ∠CBD= ∠ABC
∠ABD= 80
∠CBD= 92
∠ABC=?
∠ABC= 172
40x50
2000
210/70
3
500-230=
270
(10+2)3-2
34
∠ABC + ∠DBC = ∠ABD
∠ABC = 53
∠DBC = 127
∠ABD=?
∠ABD= 180
50x60
3000
10/2
5
600-340=
260
(11+3)4+7
63
∠ABC + ∠DBC = ∠ABD
∠ABC= 35
∠DBC= 234
∠ABD=?
∠ABD= 269
60x70
4200
630/70
9
700-330=
370
(12+2(-5)2+1
-7