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1 answer:
1. Complementary angles are any 2 angles whose sum is 90°
Complementary angles are any 2 angles whose sum is 180°
a) BXC and CXD add up to 90°, so they are 2 complementary angles
b) AXC and CXD add up to 180°, so they are 2 supplementary angles
c) 2x+40°=90° (as BXC and CXD are complementary)
2x=90°- 40°
2x=50°
x=50°/2=25°
5y=90°
y=18°
Complementary angles are any 2 angles whose sum is 180°
a) BXC and CXD add up to 90°, so they are 2 complementary angles
b) AXC and CXD add up to 180°, so they are 2 supplementary angles
c) 2x+40°=90° (as BXC and CXD are complementary)
2x=90°- 40°
2x=50°
x=50°/2=25°
5y=90°
y=18°
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