Find angle a.
1
a
65°
There are 90° in a right angle. a + 65 = 90 a = 90 − 65 a = 25° Angle a = 25°
1 (a) Complete the number sentence for this angle problem.
55°
r + 55 =
r
(b)
s + 130 =
130 s
160
9781380050717__text.indb 160
28/04/2022 12:13
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