The diagram below shows rectangle RSTU with two diagonals drawn. R
(6x-15)
63°
U
T
To find the value of x, Justin wrote the following steps.
1. mZSTR +m/RTU = 90°
2. mZRTU = 27"
3.6.1 15 = 27
4.62 = 42
5. = 7
Which statement can be used to justify the first step?
O The alternate interior angles formed by the diagonals are congruent.
The angles at each vertex of the rectangle are right angles.
Opposite angles in a rectangle are congruent.
The diagonals of a rectangle are congruent.

The angles at each vertex of the rectangle are right angles

Step-by-step explanation:

146%

step-by-step explanation:

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)