Question

Imma need help in a test 3 and 4 with step by step please and with proper explanation ill give you guys alotta points if you do it correctly

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

wait dear I will answer you

3. true

Two sides and an angle of a triangle are equal to two sides and an angle of another triangle. The two triangles are not equal because the corresponding equal angles must be contained in the equal sides.

4. AB=AC (Given)

It means that ∠DBC=∠ACB (In triangle, angles opposite to equal sides are equal)

Let ∠DBC=∠ACB=x .......(1)

AC=AD (Given)

It means that ∠ACD=∠BDC (In triangle, angles opposite to equal sides are equal)

Let ∠ACD=∠BDC=y ......(2)

In ∆BDC, we have

∠BDC+∠BCD+∠DBC=180° (Angle sum property of triangle)

⇒∠BDC+∠ACB+∠ACD+∠DBC=180°

Putting (1) and (2) in the above equation, we get

y+x+y+x=180°

⇒2x+2y=180°

⇒2(x+y)=180°

⇒(x+y)=180/2=90°

Therefore, ∠BCD=90°

hope, this will help you.☺