Question

6 fill in the blank 9 points
6.
$\triangle ghj cong \triangle square$ by $square$

Explanation:

Step1: Identify congruent sides/angles

• $GJ = JI$ (marked congruent segments)
• $\angle GJH = \angle IJH = 90^\circ$ (right angle marker)
• $HJ = HJ$ (common side, reflexive property)

Step2: Match congruent triangle

The corresponding triangle to $\triangle GHJ$ is $\triangle IHJ$, and the congruence rule using two sides and the included right angle is SAS (Side-Angle-Side).

Answer:

$\triangle GHJ \cong \boldsymbol{\triangle IHJ}$ by $\boldsymbol{SAS}$