Pregunta \( \mathrm{N}^{\circ} 4 \) : Dos rectas que tienen la misma pendiente se denominan: Seleccione la respuesta correcta Rectas Paralelas Rectas Secantes Rectas Perpendiculares Ninguna de las anteriores

Câu 20. Cho hình chóp \( S, A B C D \) có đáy \( A B C D \) là hình bình hành. Gọi \( G, K \) lần lượt là trọng tâm các tam giac \( S A D, S C D \) a) Tìm giao tuyyên \( (S A D) \) và \( (S B C) \). b) Chứng minh rằng: \( G K / /(A B C D) \).

Determine the equation of a circle with centre \( (0 ; 0) \) and a point \( (3 ; 4) \) on the perimeter of the cirlce. (A) \( x^{2}+y^{2}=16 \) (B) None of these (C) \( x^{2}+y^{2}=12 \) (D) \( x^{2}+y^{2}=9 \) (E) \( x^{2}+y^{2}=25 \)

If the straight line \( y=m x \) touches the circle \( (x-2)^{2}+(y-6)^{2}=4 \), then \( m=\ldots \ldots \) \( \begin{array}{llll}\text { (a) } \frac{1}{3} & \text { (b) } \frac{2}{3} & \text { (c) } \frac{-4}{3} & \text { (d) } \frac{4}{3}\end{array} \)

A cuboid has a total surface area of \( 94 \mathrm{~cm}^{2} \). If its length is 5 cm and breadth is 3 cm , find its height.

Given: \( \angle A \cong \angle E \) \( A B \cong E D, B C \cong D C, A C \cong E C \) Prove: \( \triangle A C B \cong A E C D \) Statements 1. 2. \( A B \cong E D, B C \cong B C, A C \cong E C \) 3. \( \angle A D \angle A C B \cong \angle E C D \) 4. \( \angle A B C \cong \angle E D C \) S. \( \angle A \) angles