Question

Please answer quickly! will give brainiest. (100 points!!)

Answer 1

Answer:

1. 30°

2. $1:1:\sqrt{2}$

3. 20cm

4. 5cm

Step-by-step explanation:

for the first one:

we have the triangle RVT and we know that

$\angle V = 90\\\\\angle R = 60$

so $\angle T$ $+ \angle V+\angle R$ = 180

so

$\angle T = 30$

for the second one

we know by specials right triangles that the sides are

$x:x:x\sqrt{2}$

divide by x and get

$1:1:\sqrt{2}$

for the third one

again by 30-60-90 triangle we know that

$2BC=AB\\\\2(10)=AB\\\\AB=20$

for the fourth one

here we can use excersie 3 and the ratio of XY:YC = 1:1

that means they are equal so

XY=YC

XY = 5