Mark the statements that are true. a. an angle that measures is a reflex angle. b. an angle that measures 65 is an acute angle. c. an acute angle measures less than . d. an angle that measures 300 is an obtuse angle.

B and D

Step-by-step explanation:

We are given four statements

Starting with correct options :

B is correct statement because of the definition of Acute Angle  .

Definition of Acute Angle : An angle that measures less than 90°  is known as acute angle.

Since 65°∠90°

So, B is the correct statement  .

D is correct statement because of the definition of Obtuse Angle.    

Definition of Obtuse Angle : An angle that measures more than 90°  is known as Obtuse Angle.

Since  90°∠300°

So, D is the correct statement  .

Option C is incorrect because it is incomplete .

Option A is incorrect because it is incomplete .

10cm

step-by-step explanation:

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answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet