221k views
1 vote
Select all that applym

Select all that applym-example-1
User Svisstack
by
6.8k points

1 Answer

5 votes

m∠c

m∠b + m∠d

Step-by-step explanation:

m∠a = 2m∠b

m∠a + m∠b = 90 degrees

2m∠b + m∠b = 90°

3m∠b = 90

m∠b = 90/3

m∠b= 30°

m∠a = 2m∠b

m∠a = 2(30°)

m∠a = 60°

m∠c + m∠b = 90°

m∠c + 30 = 90

m∠c = 90 - 30

m∠c = 60°

m∠c + m∠d = 90°

60 + m∠d = 90

m∠d = 90 - 60

m∠d = 30°

Acute angles are angles less than 90°.

m∠c is less than 90. Hence, it is an acute angle.

m∠a + m∠c = 60 + 60 = 120 > 90

m∠b + m∠d = 30 + 30 = 60 < 90. Hence, it is an acute angle

m∠a + m∠d = 60 + 30 = 90

m∠c + m∠d = 60 + 30 = 90

User Sikandar Sahab
by
6.7k points